Ubers Yveltal


destroyer of teams... and my free time

QC 3/3 (DMDW, Cynara, Serial EKiller)
GP 2/2 (A Cake Wearing A Hat, frenzyplant)

[OVERVIEW]

* Yveltal is a commonly seen and versatile powerhouse in the tier that is capable of filling multiple different roles as a result of great attributes such as its stat distribution, typing, and damage-boosting ability, with an expansive movepool to complement all of these traits.
* Offensively, Yveltal is a very strong wallbreaker that can easily fit into offensive teams thanks to its difficult-to-handle STAB attacks, which are able to 2HKO a large amount of the tier on their own, leaving a lot of room for customization based on the team structure it is selected for.
* Yveltal is also one of the best offensive checks to many of the metagame's most threatening Pokemon, such as Primal Groudon, Necrozma-DM, and Marshadow. It is difficult for Yveltal to be of little use in battle even with offensive sets, as it adds much-needed role compression to offensive teams. Defensive sets further improve on Yveltal's ability to handle top threats and provide utility to bulkier teams.
* Yveltal's versatility allows it to be a wallbreaker, a Choice Scarf revenge killer, a dedicated stallbreaker, or even a physical wall.
* While base 99 Speed is sufficient for wallbreaking purposes, Yveltal tends to be reliant on its reasonable bulk, hit-and-run strategies, Sucker Punch, or a Choice Scarf set to avoid being revenge killed or dealt with by faster Pokemon, as many teams have a faster attacker than Yveltal that can get the better of it.

[SET]
name: Life Orb
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: Taunt
move 4: Sucker Punch / Toxic
item: Life Orb
ability: Dark Aura
nature: Mild
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse is Yveltal's primary attack. With Life Orb, Dark Aura, and a Special Attack-boosting nature, it is strong enough to 2HKO foes as bulky as support Arceus formes neutral to the move, making it a fearsome wallbreaker and forcing teams to pack a Dark-resistant Pokemon or a special wall that can handle the attack.
* Oblivion Wing has great neutral coverage alongside Dark Pulse, hitting Fairy-type switch-ins such as Xerneas for a 2HKO. Oblivion Wing also heals 75% of the damage dealt, which comes in handy to counteract the residual damage from weak attacks, status, Life Orb recoil, and Stealth Rock.
* Taunt prevents the usage of status moves against Yveltal's team, making it easier to break through bulky targets that cannot effectively deal with Yveltal's damage output. It is also helpful against offensive teams, preventing offensive Pokemon such as Primal Groudon and Xerneas from using Yveltal as a setup target so that teammates can better handle them, or making a Taunted target a setup opportunity for a teammate. Taunt and Oblivion Wing can be enough to win a duel against some support Arceus formes.
* Sucker Punch further increases Yveltal's offensive abilities by letting it get the first hit in against would-be revenge killers such as Mega Gengar and adds a useful priority attack to support its team against faster threats, such as Ultra Necrozma and boosted Double Dance Necrozma-DM. Taunt and Sucker Punch can be a potent combination and can force mind games against targets if Yveltal is weakened.
* Toxic is a viable alternative to Sucker Punch that takes advantage of the many switches Yveltal can force in order to poison difficult-to-break checks such as Arceus-Dark, Tyranitar, and Arceus-Fairy, weakening their effectiveness as consistent Yveltal switch-ins over the course of the match.
* Knock Off is another viable option that gives this Yveltal variant an easier time against Ho-Oh, breaks through Chansey and Blissey more quickly, and removes most common items used on switch-ins such as Magearna and Xerneas.
* Heat Wave is a viable option to eliminate Magearna as a check, which can also help teammates such as Xerneas. Repeated use of Dark Pulse can weaken Magearna enough for it to be KOed by a surprise Heat Wave. Heat Wave also has the ability to immediately OHKO Ferrothorn and Mega Scizor, avoiding a retaliation, as Dark Pulse 2HKOes them.

Set Details
========

* Maximum Special Attack investment with a Special Attack-boosting nature gives Yveltal maximum wallbreaking potential and reaches key damage benchmarks against various Arceus formes and Xerneas.
* Maximum Speed investment gets the most out of Yveltal's Speed tier, letting it outspeed threats such as Primal Groudon, Primal Kyogre, and Necrozma-DM.
* The choice of nature is an important decision to make with Life Orb Yveltal. Special Attack-boosting natures are optimal for damage output, as this set is intended to be a wallbreaker and the usage of Sucker Punch means that Speed-boosting natures are not as important. Speed-boosting natures can be useful on sets lacking Sucker Punch, as Yveltal can then outspeed Timid Lunala and Jolly Rayquaza to hit them first.
* By reducing Yveltal's Defense stat with the usage of a Mild or Hasty nature, Yveltal is more susceptible to getting OHKOed by Rayquaza, Marshadow, and physical Primal Kyogre after Stealth Rock damage. Ultra Necrozma and Primal Groudon also gain better odds to OHKO Yveltal from full HP with Stone Edge.
* By reducing Yveltal's Special Defense stat with the usage of a Rash or Naive nature, the matchup against support Arceus formes becomes more difficult, and Yveltal's ability to offensively check Mewtwo, Giratina-O, and special variants of Primal Groudon comes with an increased risk of getting KOed.
* Life Orb is the best item to increase Yveltal's overall damage output while retaining the flexibility of switching moves, which is an important aspect behind Yveltal's threat level.

Usage Tips
========

* Life Orb Yveltal aims to break down the enemy team while providing an offensive check to threats such as Primal Groudon, Necrozma-DM, and Marshadow.
* Yveltal can find room to switch in against Ground- and Ghost-type moves or on predicted moves that don't pressure it, such as entry hazards and recovery moves.
* Keeping Yveltal sets with Sucker Punch around can be very helpful to stop setup sweepers from taking over the match. Ultra Necrozma and Mewtwo have a hard time sweeping any team with a Sucker Punch Yveltal ready to revenge kill them. Having Sucker Punch available to take down a weakened Double Dance Necrozma-DM can also save a game.
* Yveltal's matchup against most of the metagame is favorable, making it a good candidate to lead with to force the opponent to act defensively. However, this isn't a foolproof plan, as the opponent can lead with a check to Yveltal.
* Support Arceus formes can be difficult for Yveltal to overcome, depending on the forme. Arceus-Fairy is the hardest for Yveltal to take down and is best hit on the switch with an attack or Toxic before switching to a suitable teammate. Arceus-Dark, Arceus-Water, and Arceus-Ground can be beaten under the right conditions, such as afflicting them with Taunt on the switch and recovering any damage with repeated use of Oblivion Wing.
* Dark Pulse is generally a safe option to use to wear down checks. Oblivion Wing is best used when Yveltal is low on health or when you predict the opponent to switch to a Dark-resistant Pokemon. Taunt is best used on defensive Pokemon to prevent entry hazards, recovery options, and status moves, but it can be used to stop a setup sweeper that Yveltal's team would be unable to handle if Yveltal switched out. Taunt + Oblivion Wing is a potent combination to sustain Yveltal and win in matchups against defensive threats. Yveltal can also use Taunt in a sacrificial way to give a teammate a free chance to set up.
* If there are no obvious Yveltal checks in Team Preview, it is likely that the opponent's unrevealed Arceus forme is capable of checking Yveltal in some way, so keep an eye out.
* In Yveltal mirror matchups, note that the slower Yveltal will usually come out on top due to receiving Oblivion Wing recovery after draining the enemy Yveltal's HP.
* While Yveltal can take advantage of Primal Groudon's use of Stealth Rock or Precipice Blades, it can still be a very risky matchup. Primal Groudon's coverage moves such as Rock Tomb, Stone Edge, and Overheat can put an aggressive Yveltal in a very bad situation, most likely leading to its KO.

Team Options
========

* Life Orb Yveltal best fits teams of an offensive nature, as it is an offensive Ground-immune Pokemon with difficult-to-handle attacks and a possible priority move.
* Primal Groudon stands out as an excellent partner, with many variants of it able to assist Yveltal and vice versa. Generally, Primal Groudon puts pressure onto the Fairy- and Rock-type Pokemon that can scare Yveltal, while Yveltal heavily threatens Primal Groudon's defensive checks such as Lugia and Giratina. Stealth Rock variants of Primal Groudon appreciate Yveltal's ability to pressure Defog users, while more offensive sets can break through the many support Arceus formes that trouble Yveltal.
* Necrozma-DM is another excellent partner that can create a potent core with Primal Groudon involved. Necrozma-DM adds additional offensive pressure and security against Fairy-types, while Yveltal can handle Dark-, Ground-, and Ghost-type attacks directed at Necrozma-DM. Necrozma-DM can also act as a Stealth Rock setter with the longevity to repeatedly take on Fairy-type threats for Yveltal.
* Xerneas adds additional wallbreaking pressure to Yveltal's team. Geomancy variants appreciate Yveltal's ability to chip away at Magearna while also threatening Necrozma-DM and Primal Groudon. Choice Scarf Xerneas offers revenge killing utility against Pokemon such as Marshadow and Ultra Necrozma along with cleric support, meaning Yveltal isn't as hard pressed to offensively check them with Sucker Punch.
* Mega Gengar can trap and remove Yveltal's biggest check in Arceus-Fairy while also threatening to trap many other support Arceus formes. It can also revenge kill Ultra Necrozma, which is helpful on teams where Yveltal opts for Toxic over Sucker Punch.
* Extreme Killer Arceus benefits offensive teams greatly by adding additional priority and therefore revenge killing potential, while Yveltal helps against the Ghost-types that can trouble it.
* Arceus-Water is a great support Arceus forme for bulkier teams that adds a check to many Primal Groudon variants, particularly special variants. It also assists against Necrozma-DM, Ho-Oh, Mega Salamence, and Mega Lucario and can pivot into Primal Kyogre, all of which can help take pressure off Yveltal.
* Arceus-Ground can opt for either a Swords Dance or a Calm Mind set to act as an extra soft check to Primal Groudon and Necrozma-DM for Yveltal. In return, Yveltal can heavily pressure Ground-immune Pokemon such as Celesteela, Skarmory, and Giratina-O to make room for Arceus-Ground to sweep.
* Sticky Web teams with Smeargle as the entry hazard setter can benefit from Yveltal's ability to outspeed and break through defensive cores with Sticky Web active. Arceus formes in particular become easy targets for Yveltal under Sticky Web, as the likes of Arceus-Water are vulnerable to a faster Taunt and easily 2HKOed. Yveltal's access to Taunt and Sucker Punch further reinforces its potential on Sticky Web teams, as Yveltal can Taunt many Defog users to keep Sticky Web up and prevent setup sweepers from turning the tables against Yveltal's team, with Sucker Punch as added security.

[SET]
name: Choice Scarf
move 1: Foul Play
move 2: Dark Pulse
move 3: Oblivion Wing
move 4: U-turn / Defog
item: Choice Scarf
ability: Dark Aura
nature: Modest
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Foul Play is a key move for Choice Scarf Yveltal, as one of the main purposes behind this set is to outspeed and take advantage of Swords Dance-boosted Arceus formes, Necrozma-DM, Mega Lucario, Ultra Necrozma, and Primal Groudon. It also hits Ho-Oh, Mega Mewtwo Y, and Primal Kyogre harder than Dark Pulse does on this set.
* Dark Pulse is a more consistent damage option, helpful for cleaning up weakened teams. It may lack in power against sufficiently bulky neutral targets such as most Arceus formes, however.
* Oblivion Wing on a Choice Scarf set helps to revenge kill Fighting-types such as Marshadow and clean up weakened Dark-resistant Pokemon. It also lets Yveltal recover the residual damage taken from the likes of Stealth Rock over the course of the match.
* U-turn allows Yveltal to act as a pivot by forcing out a Pokemon with the threat of its STAB attacks and using U-turn instead to let a teammate take full advantage of the free switch. Due to Choice Scarf Yveltal's lower damage output in comparison to wallbreaker sets and its locked move choices, U-turn can be a safer option than attacking with typical moves.
* Defog is a viable alternative to U-turn that adds anti-hazard measures for Yveltal's team. This can come in very handy against offensive teams that utilize a dedicated lead, as once the lead is gone, Yveltal is able to outspeed many opposing Pokemon and remove entry hazards such as Sticky Web.

Set Details
========

* Maximum Special Attack and Speed investment gives Yveltal the optimal stats to be a revenge killer for its team. A Modest nature is preferred to increase the power behind Yveltal's special attacks and help with cleaning up teams.
* Using a Choice Scarf with a Modest nature allows Yveltal to outspeed the entire unboosted metagame excluding Deoxys-S. The extra Speed from a Timid nature doesn't let it outspeed any additional threats of relevance outside of +1 Adamant Mega Blaziken.
* A bulkier spread of 124 Def / 200 SpA / 184 Spe with a Modest nature allows Yveltal to take a +2 Extreme Speed from Extreme Killer Arceus variants that don't use a damage-boosting item while outspeeding everything up to Timid Mega Mewtwo Y.

Usage Tips
========

* Choice Scarf Yveltal is primarily a revenge killer. This means that it is best brought in under very safe conditions to remove a problematic threat to its team. Fast attackers weak to Yveltal's STAB moves are easy targets. Most of these Pokemon are also weak to U-turn, meaning that even if they switch out, Yveltal can retain momentum for its team.
* This set can also clean groups of weakened Pokemon, but Yveltal's checks should be taken care of by its teammates first.
* Note that Yveltal's damage output can be lacking against bulky targets such as Primal Kyogre, Ho-Oh, and support Arceus formes. Choice Scarf variants rely on Foul Play or super effective moves to pose a threat to a team. U-turn can prevent Yveltal from being a momentum sink should this become a problem, but opponents can take advantage of this by not switching out if they can afford to take the risk.
* Choice Scarf Yveltal is still slower than a couple of boosting threats, even with a Timid nature. Rock Polish Primal Groudon and Necrozma-DM, as well as Dragon Dance Mega Salamence, will still be faster than Yveltal after a boost, so it is usually futile to attempt to revenge kill them when they are set up.
* Keep Yveltal around and healthy so that it can act against Swords Dance-boosted threats. Taking risks when potential threats such as Swords Dance Arceus formes are unrevealed can be very detrimental.
* Defog should mainly be used in situations where Yveltal has forced a Pokemon out and entry hazards must be removed at all costs. Being locked into Defog against a Pokemon unafraid of Yveltal will likely result in giving a large advantage to the enemy team.
* Remember that locking Yveltal into a move can be taken advantage of, even if the attack was the best option against Yveltal's current target. Another threat can come in right after and take advantage of a Choice-locked Yveltal.
* Choice Scarf Yveltal has a very good matchup against Psychic Terrain teams, as it will outspeed and likely be able to take out the primary wallbreakers and sweepers of such teams.

Team Options
========

* Choice Scarf Yveltal is very strong against offensive teams, but it struggles with bulkier teams due to a lack of damage output and generally finding a lower number of Pokemon to revenge kill. Teams with a clear weakness to fast threats like Ultra Necrozma and Marshadow will likely consider this variant of Yveltal.
* Primal Kyogre is a great partner for this Yveltal set, as it can soft check Necrozma-DM and mixed Rock Polish Primal Groudon, two threats that can outspeed even Choice Scarf Yveltal after a Rock Polish. In return, Yveltal performs well against the fast attackers that try to KO Primal Kyogre by taking advantage of its low Speed.
* Stealth Rock + Swords Dance variants of Primal Groudon can be effective as well, setting Stealth Rock against bulky teams while using Swords Dance-boosted Precipice Blades to heavily threaten support Arceus formes that trouble this set. In return, Yveltal threatens Giratina, Lugia, and the fast attackers that can revenge kill Primal Groudon.
* Arceus-Water can play a more defensive role than Primal Kyogre, having the bulk and recovery to better check Rock Polish Primal Groudon and Necrozma-DM while being a great option against Dragon Dance Mega Salamence, another threat that this Yveltal variant is likely to be slower than. Choice Scarf Yveltal can revenge kill the fast Psychic-type Pokemon such as Mewtwo, Deoxys-A, and Ultra Necrozma that threaten to take out Arceus-Water.
* Necrozma-DM offers much-needed help against Fairy-type Pokemon and can use Yveltal's U-turn to immediately pressure many of the opponent's Yveltal checks.
* Mega Gengar can trap and remove targets with the assistance of Yveltal's U-turn while threatening many bulky targets that take Yveltal's weaker attacks well.

[SET]
name: Stallbreaker
move 1: Dark Pulse / Foul Play
move 2: Toxic
move 3: Taunt
move 4: Roost
item: Dread Plate / Leftovers
ability: Dark Aura
nature: Timid
evs: 252 HP / 72 SpD / 184 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse on a stallbreaker set is rather weak in comparison to offensive sets, but it helps to wear down and break through targets more quickly. The flinch chance can prevent Pokemon from standing up to Yveltal, as well. It also helps to have an immediate damage option against offensive Pokemon, as waiting for Toxic damage to rack up can be very risky and isn't an available strategy against Poison- or Steel-type Pokemon.
* Foul Play is a viable alternative attack that takes advantage of the foe's Attack stat, dealing more damage to offensive Pokemon than Dark Pulse would without a boost, and it also lets Yveltal act as a defensive check to boosting attackers such as Extreme Killer Arceus and Primal Groudon. Using Foul Play means that Yveltal will have a harder time taking down defensive Pokemon such as Ferrothorn that don't mind the damage from it or Toxic, however.
* Toxic is this set's main way to deal damage and break through defensive targets. By outlasting foes with Roost and preventing their own recovery options with Taunt, this Yveltal set can be very difficult for defensive Pokemon such as Blissey, Ferrothorn, support Arceus formes, and defensive Zygarde-C to handle.
* Taunt prevents foes from recovering, using setup moves in an attempt to power through Yveltal, and setting entry hazards.
* Roost keeps Yveltal healthy and is a superior recovery option to Oblivion Wing, as this set aims to stay in battle against defensive Pokemon. Oblivion Wing needs high damage output to offer sufficient healing, which this variant of Yveltal lacks.

Set Details
========

* Maximum HP investment makes good use of Yveltal's high base HP stat, making it difficult to break for many defensive Pokemon and some offensive Pokemon. With the additional 72 Special Defense EVs, Yveltal is capable of avoiding the 4HKO from a support Arceus's Ice Beam if factoring in Leftovers recovery.
* 184 Speed EVs and a Timid nature ensure that Yveltal will outspeed positive-natured base 90 Speed Pokemon and many other defensive Pokemon in the tier, allowing for a fast Taunt or Toxic before they can act against Yveltal.
* Maximum Speed investment is an option to outspeed Lunala and Rayquaza.
* Dread Plate allows Dark Pulse to cleanly 2HKO Mega Sableye, improving Yveltal's matchup against very defensive teams at the cost of passive recovery.
* Leftovers provides passive recovery, which is helpful to negate weak attacks and Stealth Rock damage without unnecessary Roost usage. As this set doesn't aim to be a check to specific Pokemon, Leftovers is ideal for sets that want longevity.


Usage Tips
========

* Stallbreaker Yveltal aims to be a big annoyance to bulky teams, taking weak attacks and taking down defensive Pokemon via Toxic stalling or repeated use of Dark Pulse while limiting their options to fight back with Taunt. Common targets include most defensive Steel-types such as Ferrothorn and Celesteela, as well as support Arceus formes.
* This set should be spreading Toxic and using Taunt to prevent enemy Pokemon from using recovery moves or using utility options against Yveltal and its team.
* When facing bulky teams, ensure that Yveltal avoids excessive exposure to Toxic itself. This is a common move from defensive teams, and if Yveltal isn't correctly supported with a cleric, it will fall to Toxic damage before having a real impact.
* This variant can be less useful against offensive teams. Toxic stalling and weaker Dark Pulses can generally be ignored by most offensive Pokemon, but a fast Taunt or Foul Play can prevent them from taking too much advantage of Yveltal. Yveltal is still bulky enough to stand up to attacks and badly poison threatening sweepers such as Calm Mind Arceus-Ground, and wearing down threats that the team can have trouble dealing with.
* A healthy Yveltal can stand unafraid of Magearna and aim to Taunt it to prevent Heal Bell. If Yveltal takes a Fleur Cannon for the trouble, it can Roost off the damage.
* Mega Sableye and Mega Diancie are annoying for this Yveltal variant, as Magic Bounce makes Yveltal hesitant to use Taunt or Toxic. Without Dread Plate, Mega Sableye can avoid the 2HKO from Dark Pulse as well, making it more frustrating to break past. Mega Diancie can take advantage of this set rather easily but is a rare sight.

Team Options
========

* Stallbreaker Yveltal is best suited to balance teams with additional bulky Pokemon and partners that can help this Yveltal set's matchup against offensive teams. This Yveltal variant provides a good way to combat very defensive teams for balance teams that can struggle to break through them otherwise. Providing cleric support for Yveltal and playing around the potential enemy cleric is key to success.
* Primal Groudon's Swords Dance and Stealth Rock set is a great partner to pressure defensive cores and check troublesome Fairy-types for Yveltal.
* Choice Scarf Xerneas stands out as an excellent partner that tackles many offensive Pokemon, threatens Mega Sableye, and provides key cleric and Defog support for this Yveltal set.
* Heal Bell Magearna is an alternative cleric that comes with better longevity while adding the ability to check enemy Dark- and Fairy-type Pokemon.
* Spikes users such as Ferrothorn are excellent partners, as Yveltal can make great use of the switches it forces to rack up Spikes damage and stall out enemy Defog users.
* Z-Move or Life Orb Marshadow is a great revenge killer to help Yveltal against offensive teams and pressure defensive cores and Fairy-types together.
* Celesteela can help against offensive Arceus-Ground variants and Ultra Necrozma, two threats that this set can have trouble with.
* Calm Mind Arceus-Ground performs very well against offensive teams and can offensively check Swords Dance Primal Groudon and Necrozma-DM, which Yveltal can't reliably check.
* Mega Gengar can make use of Yveltal's status spreading to boost Hex and trap various threats much more easily.
* Arceus-Water is one of the better support Arceus formes on bulky teams, helping Yveltal against special Primal Groudon variants, offensive Ho-Oh, Necrozma-DM, and Mega Salamence.

[SET]
name: Choice Specs
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: U-turn
move 4: Heat Wave
item: Choice Specs
ability: Dark Aura
nature: Timid
evs: 4 Def / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse from Choice Specs Yveltal is deadly to teams that lack bulky Dark-resistant Pokemon, as it picks up clean 2HKOs on Mega Diancie and maximum HP Arceus formes, a 3HKO against offensive Xerneas variants, and a 3HKO on Ho-Oh without Life Orb recoil damage.
* Oblivion Wing 2HKOes offensive Xerneas and Primal Groudon, and the extra power and lack of recoil from Choice Specs boosts Yveltal's own recovery, meaning this set tends to stick around longer.
* U-turn can let you avoid guessing games between Yveltal's STAB moves and scout for the opponent's switch-ins. U-turn can also have the advantage of disguising Yveltal's set, as both Choice item sets it commonly uses are very likely to have U-turn, adding a surprise factor when Yveltal reveals its damage output against various targets.
* Heat Wave is Yveltal's preferred coverage move on this set, targeting one of the best checks to Yveltal in Magearna for a clean 2HKO and doing high damage to Klefki. It also OHKOes Ferrothorn and Mega Scizor, two Pokemon that can take Yveltal's other moves at least once.
* Focus Blast is Yveltal's best option against Tyranitar, OHKOing any set that lacks Chople Berry after Stealth Rock damage. Focus Blast also deals very high damage to Arceus-Dark while retaining higher damage against Magearna than Yveltal's STAB moves, at the cost of lowered accuracy.
* Hurricane is an alternative very strong attack that can fit into the third or fourth moveslot, dealing more damage than Dark Pulse against neutral targets and 2HKOing Arceus-Dark and Arceus-Fairy, but it comes with shaky accuracy.


Set Details
========

* With maximum Special Attack and Speed EVs backed up by Choice Specs and a Timid nature, Yveltal is able to outspeed the crowded Speed tier below it and output more damage than Life Orb sets, at the cost of locked attacks.
* A Modest nature can be considered for maximum wallbreaking power, increasing the odds of Oblivion Wing 2HKOing support Arceus formes after Stealth Rock damage and increasing the odds for Focus Blast to OHKO Fighting-weak Arceus formes, while giving Dark Pulse even more power.

Usage Tips
========

* Choice Specs Yveltal aims to be a wallbreaker, exchanging move flexibility for the freedom to run a Timid nature, stronger attacks, better longevity, and the ability to generate momentum with U-turn when compared to Life Orb sets.
* This Yveltal variant punishes opponents with fewer strong checks to it, but against teams that employ strong Yveltal answers such as Arceus-Fairy, Magearna, and Tyranitar, it may be forced to use U-turn more often to avoid giving away momentum.
* Make use of the power given by Choice Specs to break through teams that employ weaker checks to Yveltal such as Ho-Oh and support Arceus formes neutral to Dark Pulse. The lack of Life Orb recoil means that Recover stalling this Yveltal variant isn't an option for bulky teams.
* A well timed Heat Wave against teams using Magearna can open a playground for Yveltal to spam Dark Pulse and force the opponent to aggressively take Yveltal down with faster attackers or else risk losing crucial walls.
* Choice Specs-boosted Oblivion Wing can make Yveltal annoying to take down due to the amount of healing it can generate for itself.
* Common Pokemon do resist Yveltal's STAB attacks, so be careful what Yveltal is locked into or things can backfire.
* If you are in doubt about the attack to choose, U-turn can be a safe play, provided Yveltal has teammates to take advantage of any momentum generated and a fallback if the opponent doesn't switch out.

Team Options
========

* Choice Specs Yveltal focuses purely on wallbreaking and momentum generation. Balance and bulky offense team structures are able to utilize some defensive teammates to help cover for this set's main weaknesses, namely Fairy-types and faster attackers.
* Mega Gengar stands out as one of the best partners to Choice Specs Yveltal. It can trap and eliminate Arceus-Fairy and Xerneas, and can do so with greater ease with the help of Yveltal's U-turn. Yveltal's ability to switch into many attacks that trouble Mega Gengar lets them pair well defensively, and the two can combine to form a formidable wallbreaking duo. An important trait that Mega Gengar brings is the ability to revenge kill Ultra Necrozma, which can be very threatening to balance teams.
* Mega Scizor can work alongside Yveltal to check Fairy-types and form a U-turn core where each member can help get the other get into battle against its ideal targets. Magearna can perform a similar role with Volt Switch.
* Defensive Zygarde-C can use Glare to slow down support Arceus formes so that this Yveltal variant can break through them, and it is also a good check to Primal Groudon, Necrozma-DM, and Ho-Oh.
* Primal Groudon always fits well with Yveltal, checking Fairy-types and Primal Kyogre while also bringing utility with Stealth Rock setting, additional wallbreaking, or sweeping potential based on the chosen set.
* Choice Scarf Xerneas can act as a check to many offensive Pokemon to help make up for Yveltal's lack of Sucker Punch while also providing cleric support.
* Arceus-Water can be a key support Arceus forme to assist Yveltal against the likes of Ho-Oh, Mega Salamence, and special Primal Groudon variants.

[SET]
name: Physically Defensive
move 1: Foul Play
move 2: Roost
move 3: Toxic / Taunt
move 4: Sucker Punch / Defog / Taunt
item: Charti Berry / Dread Plate
ability: Dark Aura
nature: Impish / Bold
evs: 252 HP / 176 Def / 80 Spe

[SET COMMENTS]
Moves
========

* Foul Play is Yveltal's main method of punishing physical attackers such as Primal Groudon, Necrozma-DM, and Ultra Necrozma, as they are liable to be OHKOed by this Yveltal set before breaking past it. Foul Play also does considerable damage to Primal Kyogre, offensive Ho-Oh, and Mega Salamence, as well as foes that are weak to the attack.
* Roost keeps Yveltal healthy, which is very important to counteract Stealth Rock damage and keep Yveltal away from the KO range of many boosted attacks from the likes of Primal Groudon, Mega Salamence, and other physical attackers.
* Toxic can punish support Arceus formes and Xerneas, which otherwise switch into Yveltal's other moves easily.
* Sucker Punch can be a necessary evil to quickly finish off foes that are weakened by Yveltal or its teammates. In situations where Yveltal is slower than foes such as Ultra Necrozma or Double Dance Necrozma-DM and is in the range of a boosted attack, Sucker Punch can make all the difference.
* Defog is a potential option, as Yveltal can contend with some entry hazard setters such as Primal Groudon, Skarmory and Ferrothorn and remove any Spikes or Stealth Rock set against Yveltal's team.
* Taunt is a viable option in the third or fourth moveslot, as it can combine well with any of Toxic, Sucker Punch, or Defog for various results. Taunt and Toxic can greatly annoy defensive walls, Taunt and Sucker Punch can limit foes' moves and allow Yveltal to better handle offensive Pokemon, while Taunt and Defog can prevent defensive Pokemon from using utility moves against Yveltal while it clears any set entry hazards.

Set Details
========

* 252 HP EVs and 180 Defense EVs give Yveltal maximum physical bulk with the Speed benchmark used, letting it take on many of the physical attackers in the tier. An Impish nature is preferred on sets with Sucker Punch to avoid harming its damage output, but a Bold nature works well on sets without it to reduce damage from opposing Foul Play and confusion.
* 80 Speed EVs ensure that Yveltal is faster than Adamant Necrozma-DM so that it can use Foul Play before taking an attack.
* Charti Berry is a necessary evil so that Yveltal isn't simply OHKOed by a boosted Stone Edge from the likes of Primal Groudon, Ultra Necrozma, and Swords Dance Arceus-Ground, especially if Stealth Rock damage is not avoidable.
* Dread Plate is a potential alternative that boosts the power of Foul Play to the point that it can OHKO boosted Extreme Killer Arceus and Mega Lucario, at the cost of fearing boosted Rock-type moves from the aforementioned physical attackers. Dread Plate also gives Sucker Punch a very helpful power boost, giving Yveltal good odds to OHKO Ultra Necrozma after Stealth Rock damage.
* Leftovers can also be considered to help with passive recovery, but this leaves Yveltal prone to physical attackers with Rock-type coverage.

Usage Tips
========

* Physically defensive Yveltal is just as it sounds: a physical wall that aims to check numerous threatening physical attackers such as Primal Groudon, Mega Salamence, Ultra Necrozma, Marshadow, and Swords Dance Arceus-Ground.
* It should be noted that this Yveltal variant is far from a truly reliable answer to all physical attackers and acts more like a quick fix to a team's weaknesses than like a true physical wall. Yveltal's lack of resistances to many of the boosted attacks it will be taking means that any fight with one of these threats will be a very close call, and certain conditions such as Stealth Rock being up, an unexpected attack, or a lack of Charti Berry can result in Yveltal getting destroyed by the attackers it attempts to check.
* Yveltal should ideally be kept healthy and should switch into these attackers immediately to attempt to deal with them. If Yveltal comes in too late or is too weakened, it can only aim for a surprise Sucker Punch before going down. The problem with this is that without scouting the sets of Pokemon like Ultra Necrozma, Primal Groudon, and Arceus-Ground, Yveltal may well be switching into an unfavorable matchup if they are specially offensive variants. Assess carefully.
* Sucker Punch can be a surprise to opponents that see a bulky and slower Yveltal, meaning that frail and faster attackers weak to Sucker Punch may try to KO it. If Yveltal's full moveset isn't revealed, this Yveltal set can keep opponents on their toes.
* Spreading Toxic and using Taunt on slower Pokemon is still a viable way to get use out of this set. Yveltal's base Speed is higher than the majority of defensive Pokemon, and the its bulk means that taking weak attacks is easy.

Team Options
========

* Physically defensive Yveltal generally isn't meant to be built around, as it isn't reliable enough in practice and has some key weaknesses depending on the item and move choices. This Yveltal variant adds security against physical attackers to teams that find themselves vulnerable near the end of the teambuilding process. Teams that are using more creative builds can find themselves using physically defensive Yveltal to patch up obvious holes.
* Stealth Rock Primal Groudon sets offer solid checks to Fairy-types and Primal Kyogre, and the entry hazard punishes the switches this Yveltal variant will force from physical attackers.
* Necrozma-DM is a capable teammate that fits as a specially defensive wall aimed to tackle support Arceus formes and set Stealth Rock.
* Ferrothorn can check most Fairy-types and set Spikes to punish the switches that Yveltal and its team forces.
* Arceus-Water and Arceus-Ground can both fit as a check to special Primal Groudon and Necrozma-DM. Charti Berry variants of this Yveltal set can handle Swords Dance Ultra Necrozma and Primal Groudon in return.
* Toxapex is a helpful partner to set Toxic Spikes, annoy Fairy-types, and be difficult to take down for defensive Pokemon that try to wall Yveltal.
* Choice Scarf Xerneas helps to keep Yveltal from getting overwhelmed by physical attackers such as Marshadow while providing Defog and Aromatherapy support.

[STRATEGY COMMENTS]
Other Options
=============

* A Choice Band set can pose a threat to bulky teams when combined with a trapper that can deal with support Arceus formes, but it can lack the flexibility of other sets. It also cannot fit a move that offers recovery such as Roost or Oblivion Wing, meaning that it is frailer in practice when compared to every other Yveltal set.
* Using Flyinium Z is possible with Sky Attack on a physical set or with Hurricane on a special set but lacks a real use that other sets can't already offer.
* Darkinium Z is also usable with one of Yveltal's many Dark-type STAB options but doesn't have a real purpose other than one strong attack against a target. Z-Moves are far better utilized by other Pokemon that can pair with Yveltal, such as Necrozma-DM.
* Substitute can take advantage of Yveltal's ability to force switches, and with Disable, it can punish Pokemon that only have one ideal move to break Yveltal's Substitutes. This requires using up two of Yveltal's moveslots to accomplish, however, and there are better options to consider.

Checks and Counters
===================

**Fairy-types**: Arceus-Fairy stands out as the best answer to Yveltal, outspeeding it and taking all of its attacks while only fearing Toxic or a lucky Choice Specs Yveltal that has Hurricane. U-turn can also throw a wrench into the matchup, as Yveltal has many potential partners that can easily take advantage of Arceus-Fairy such as Necrozma-DM and Mega Gengar. Xerneas is a common offensive check to Yveltal that can pivot into Dark Pulse and force Yveltal out while having Aromatherapy to deal with the potential Toxic poison Yveltal has spread, but it has to be careful about taking too much damage from an offensive set's Oblivion Wing. Magearna resists many of Yveltal's moves outside of Heat Wave and has the bulk to repeatedly switch in and Heal Bell to remove any status Yveltal has spread, but it can be taken advantage of with U-turn or worn down by repeated attacks. Mega Diancie resists both of Yveltal's STAB attacks, has Magic Bounce to mess with the utility options that various sets utilize, and generally outspeeds most sets, but it lacks the defensive stats to repeatedly stand up to offensive Yveltal's attacks.

**Rock-types**: Tyranitar and the rare Arceus-Rock make for good Yveltal checks. Tyranitar resists most of Yveltal's common attacks and takes little damage thanks to the Special Defense boost from sand, but it has to be wary of a rare Focus Blast or Yveltal using U-turn to pivot out of it. Arceus-Rock is naturally faster than Yveltal and can strike it down with Judgment while healing off Dark Pulse damage with Recover, but has the same fears as Tyranitar.

**Arceus-Dark**: Arceus-Dark's ability to outspeed Yveltal and avoid the 2HKO from all of Yveltal's standard attacks makes it a reasonable check, as it can retaliate with Ice Beam or cripple Yveltal with Toxic. Yveltal is capable of winning in various conditions, however. The Life Orb set can use a combination of Oblivion Wing, Taunt, and Toxic to break through Arceus-Dark's healing and win a fight. Choice item sets are able to use U-turn to pivot off of Arceus-Dark into a suitable teammate and eventually wear it down. Stallbreaker and physically defensive sets only fear Arceus-Dark's higher Speed, which can lead to it using Toxic on Yveltal before it can do the same to try and stall Arceus-Dark out.

**Ho-Oh**: Ho-Oh is sufficiently bulky enough to take Yveltal's special attacks and try to badly poison Yveltal before pivoting out and recovering with Regenerator. Ho-Oh can also stall with Recover until Yveltal weakens itself with Life Orb recoil, but this comes with the risk of a Dark Pulse flinch. Knock Off variants of Life Orb Yveltal can also deal a lot of damage to Ho-Oh, potentially 2HKOing it if it switches into Dark Pulse. Foul Play will also deal considerable damage to offensive Ho-Oh sets. Stealth Rock being up can massively limit Ho-Oh's ability to check Yveltal as well.

**Faster Attackers**: Pokemon with a higher base Speed than Yveltal such as Mega Salamence, Mega Lucario, Ultra Necrozma, Mewtwo, and Deoxys-A are capable of dealing enough damage to take Yveltal out. These Pokemon have to be very careful, however, as Yveltal is capable of taking a single hit from the majority of them and retaliating with a strong attack. There is also the potential of Sucker Punch from the Life Orb and physically defensive sets, and these faster attackers are also ideal targets of the Choice Scarf set, which reverses the matchup.

**Support Arceus Formes**: Maximum HP Arceus formes neutral to Dark Pulse such as Arceus-Ground and Arceus-Water are able to switch into Life Orb Yveltal and stall with Recover until Life Orb recoil wears Yveltal down into the KO range of an attack such as Ice Beam. Taunt variants of Life Orb Yveltal are able to trade blows with these support Arceus formes and potentially win a duel, but they will come out severely damaged. Choice Specs Yveltal can easily overpower these support Arceus formes. Choice Scarf Yveltal has the ability to pivot out with U-turn to a better-suited teammate, but its attacks struggle to break through a support Arceus forme. Stallbreaker and physically defensive Yveltal variants will only be annoyed if they are badly poisoned by Toxic first but will still stall out these Arceus formes either way.

**Blissey and Chansey**: Blissey and Chansey have the bulk to handle Yveltal's special attacks with ease, but they are only effective checks to Choice item variants, and Yveltal can still use U-turn on these sets to avoid these Pokemon. Taunt variants of Yveltal will easily shut down any attempts that Blissey and Chansey make to check it, and Taunt is commonly seen on any variant that isn't holding Choice Scarf or Choice Specs.

**Electric- and Ice-types**: Dedicated Electric- and Ice-type attackers are very rare in Ubers but make good offensive checks to Yveltal regardless. The likes of Tapu Koko, Zekrom, and Kyurem-W are more than capable of OHKOing Yveltal if given the chance, but they can struggle to switch in safely.

**Mega Sableye**: While Mega Sableye cannot stand up to offensive Yveltal's attacks, it will take Foul Play with ease, and Magic Bounce can discourage using utility moves such as Taunt and Toxic, making it more difficult to break through defensive teams. A well timed bounce can force stallbreaker and physically defensive Yveltal variants to switch, as they struggle to effectively break through other Yveltal checks such as support Arceus formes and Blissey without access to Taunt.

**Status**: Toxic poison and paralysis can be very crippling to Yveltal, with higher effectiveness depending on the set. Defensive and stallbreaker sets hate getting badly poisoned, while paralysis affects Yveltal's offensive abilities. Burns are also annoying to Foul Play Yveltal variants, as it will halve the damage of Foul Play and make it much more difficult to use it against enemy Pokemon effectively.
 
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I think most issues have been solved during internal discussion. Well yeah I didn't do shit but whatever.

Overview can add a brief mention about what allows Yveltal to do all these crazy things - maybe giving a tiny mention about its typing will give readers better sense of what allows it to function defensively as well.

When talking about Sticky Web in Team Options maybe mention that Yveltal's matchup against Arceus formes becomes significantly better. You mention that support Arceus formes can be troublesome for Yveltal to try taking on and with webs you straight up 2HKO them and can Taunt them first and deny Recover / Toxic / Defog. It just gives Yveltal an upper hand with higher Speed which it previously could not without webs up.

I don't have much to say about Stallbreaker set because I haven't used it and what you have there seems fine to me.

When talking about Dread Plate in Set Details for Defensive set, we can consider additionally mentioning about the item giving Yveltal better chances to OHKO Ultra Necrozma with Sucker Punch. To specify, without the plate, the damage roll against it is 75.2 - 88.3% but with the plate the roll turns into 90.1 - 106.2% (assuming Ultra Necrozma that is benchmarked to live LO Marshadow's Shadow Sneak). This seems pretty big to me.


Very small nitpick, but Choice Band on Other Options can further elaborate on what makes it an inferior option. Losing longevity is big because every set we go over here has Oblivion Wing or Roost. When it comes to talking about ORAS techs in Other Options I personally prefer elaborating on what makes it unusable compared to other sets (without talking about generational shifts, of course). Just a minor point that can be beefed unless, again, if we were to avoid being overly specific.

I am honestly worried about you at this moment because writing this must have been painful as it was arduous for me to give a read-over.

Rest in peace. Good job boss.

QC 1/3

 
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Cynara

Banned deucer.
We've gone over the analysis in great detail in the QC channel and you seemed to have mentioned everything I can see after DMDW's check and the quality of this analysis is absolutely superb.

I've been doing some playing and teambuilding with the stallbreaker set and I honestly feel it should get the #3 set over Choice Specs. Stallbreaker really takes advantage of what the metagame will always be. I think Dread Plate should probably main item choice, the difference in power is very noticeable and increases the breaking potential of the set and allows you to get through fatter mons easier, especially the support Arceus, and actually being able to break Sableye is important. The additional chip damage on fairies is also nice. The Lack of Leftovers isn't too huge of a hindrance through testing, you can still easily sit in support Arceus, Ice beam, as it can never 2HKO you after SR, though I do admit the advantage of leftovers is nice too since you avoid the 3hko from support Arceus Ice beam and this makes it easier to create opportunities in this matchup

Team options should include Spikes users, Like Ferrothorn, the majority of builds that I have been building ended up as Spikes Balances/Bulky Offenses. I feel this Yveltal set takes advantage of Spikes and the additional power from Dread plate can also help it out with this and it puts a considerable amount pressure on opposing defensive threats and make the opponent fold easier.

Marshadow also pairs really well as it helps with the offense matchup, Z-Marsh is also nice to consider as a set, but stuff like LO still works.

QC: 2/3
 

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[OVERVIEW]

* Yveltal is a commonly seen and versatile powerhouse in the tier that is capable of multiple different roles as a result of its great attributes such as its stat distribution, typing, and damage boosting damage-boosting ability, with a great movepool to compliment complement all of these traits.
* Offensively, Yveltal is a very strong wallbreaker that can easily fit into offensive teams thanks to its difficult to handle difficult-to-handle STAB attacks, which are able to 2HKO a large amount of the tier on their own, leaving a lot of room for customisation customization based on the team structure it is selected for.
* Defensively, Yveltal is one of the tier's best offensive checks (This seems kind of oxymoronic) to many of the metagame's most threatening Pokemon, such as Primal Groudon, Necrozma-DM, and Marshadow, (RC) among many. (?) It is difficult for Yveltal to be of little use in battle even with offensive sets, as it adds much needed much-needed role compression to offensive teams. Defensive sets further improve on Yveltal's ability to handle top threats and provide utility to bulkier teams.
* Yveltal's versatility allows it to be a wallbreaker, a Choice Scarf revenge killer, a dedicated stallbreaker, or even a defensive wall.
* While base 99 Speed is sufficient for wallbreaking purposes, Yveltal tends to be reliant on its reasonable bulk, hit and run hit-and-run strategies, Sucker Punch, or a Choice Scarf set to avoid being revenge killed or dealt with by faster Pokemon, as many teams will have a faster attacker than Yveltal that can get the better of it.

[SET]
name: Life Orb
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: Taunt
move 4: Sucker Punch / Toxic
item: Life Orb
ability: Dark Aura
nature: Mild
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse is Yveltal's standard primary attack. With Life Orb, Dark Aura, and a Special Attack boosting Attack-boosting nature, it is strong enough to 2HKO foes as bulky as support Arceus formes neutral to the move, making it a fearsome wallbreaker and forcing teams to pack a resistance Dark-resistant Pokemon or a special wall that can handle the attack.
* Oblivion Wing has great neutral coverage alongside Dark Pulse, hitting Fairy-type switch-ins such as Xerneas for a 2HKO and healing 75% of the damage dealt. This comes in handy to counteract the residual damage from weak attacks, status damage, Life Orb recoil, and Stealth Rock damage.
* Taunt prevents the usage of status, setup, and recovery options and the removal or setting of entry hazards status moves against Yveltal's team, making it easier to break through bulky targets that cannot effectively duel against Yveltal's damage output. It is also helpful against offensive teams, preventing offensive Pokemon such as Primal Groudon and Xerneas from using Yveltal as a setup target so that teammates can better handle them, or even use a taunted target for a free setup making a Taunted target a setup opportunity for a teammate. Taunt and Oblivion Wing can be enough to win a duel against some support Arceus formes.
* Sucker Punch further increases Yveltal's offensive abilities by getting letting it get the first hit in against would-be revenge killers such as Mega Gengar and adds a useful priority attack to support its team against threatening and faster Pokemon, such as a Ultra Necrozma and boosted Double Dance Necrozma-DM or Ultra Necrozma. Taunt and Sucker Punch can be a potent combination and can force mindgames mind games against targets should if Yveltal be is weakened.
* Toxic is a viable alternative that takes advantage of the many switches Yveltal can force and in order to spread status against difficult to break difficult-to-break checks such as Arceus-Dark, Tyranitar, and Arceus-Fairy, weakening their effectiveness as consistent Yveltal switch-ins over the course of the match.
* Knock Off is another viable option that gives this Yveltal variant an easier time against Ho-Oh, breaks through Chansey and Blissey faster more quickly, and also removes most common items used on switch-ins such as Magearna and Xerneas.
* Heat Wave is a viable option to deal with Magearna. Repeated use of Dark Pulse can weaken Magearna to the range of a surprise Heat Wave and eliminate it as a check, which can also help teammates such as Xerneas. Heat Wave also has the ability to immediately OHKO Ferrothorn and Mega Scizor, rather than being forced to deal with a retaliation while Dark Pulse 2HKOes them.

Set Details
========

* Maximum Special Attack investment with a Special Attack boosting Attack-boosting nature offers gives Yveltal maximum wallbreaking potential and reaches key damage benchmarks against various Arceus formes and Xerneas.
* Maximum Speed investment gets the most out of Yveltal's Speed tier, outspeeding many other dangerous threats such as Primal Groudon, Primal Kyogre, and Necrozma-DM.
* The choice of nature is an important decision to make with Life Orb Yveltal. Special Attack boosting Attack-boosting natures are optimal for damage output, as this set intends to be a wallbreaker and the usage of Sucker Punch means that Speed boosting Speed-boosting natures are not as important. Speed boosting Speed-boosting natures can be useful on sets lacking Sucker Punch, as Yveltal can then outspeed Timid Lunala and Jolly Rayquaza to hit them first.
* By reducing Yveltal's Defense stat with the usage of a Mild and or Hasty nature, it Yveltal is more susceptible to getting OHKOed by attacks from Physical Primal Kyogre, Rayquaza, and Marshadow, (AC) and physical Primal Kyogre after Stealth Rock damage. Ultra Necrozma and Primal Groudon also gain better odds to OHKO Yveltal from full HP.
* By reducing Yveltal's Special Defense stat with the usage of a Rash or Naive nature, the matchup against support Arceus formes becomes more difficult, and Yveltal's ability to offensively check Mewtwo, Giratina-O, and special variants of Primal Groudon comes with an increased risk of getting KOed.
* Life Orb is the best item to strengthen Yveltal's overall damage output while retaining the flexibility of switching moves, which is an important aspect behind Yveltal's threat level.

Usage Tips
========

* Life Orb Yveltal aims to break down the enemy team while providing an offensive check to threats such as Primal Groudon, Necrozma-DM, and Marshadow.
* Yveltal can find room to switch in using its resistances to common (immunity to ground not resistance) against Ground- and Ghost-type moves or on predicted moves that wouldn't pressure Yveltal's switching in Yveltal can easily switch into, (AC) such as a Pokemon setting entry hazards or using and recovery options moves.
* Keeping Yveltal sets with Sucker Punch around can be very helpful to handle runaway setup sweepers from taking over the match. Ultra Necrozma and Mewtwo will have a hard team sweeping any team with a Sucker Punch Yveltal ready to revenge kill it them. Having Sucker Punch available to take down a weakened double dance Double Dance Necrozma-DM can also save a game.
* Yveltal's matchup against most of the metagame is favorable, making it a good candidate to lead with to force the opponent to act defensively. However, this isn't a foolproof plan.
* Support Arceus formes can be a difficult task for Yveltal to overcome, (AC) depending on the forme. Arceus-Fairy is the hardest obstacle for Yveltal to take down and is best hit on the switch with an attack or Toxic before switching to a suitable teammate. Arceus-Dark, Arceus-Water, and Arceus-Ground can be beaten under the right conditions, such as afflicting them with Taunt on the switch and outhealing recovering any damage with repeated use of Oblivion Wing.
* Dark Pulse is generally a safe option to use to wear down checks. Oblivion Wing is best used when Yveltal is low on health or on a predicted switch to a Dark-type resistant Dark-resistant Pokemon. Taunt is best used on defensive Pokemon to prevent entry hazards, recovery options, and status attacks from affecting Yveltal, but it can be used to stop the plans of an offensive setup sweeper if Yveltal's team would be unable to handle it should Yveltal switch out. Taunt and + Oblivion Wing is a potent combination to outheal and win a fight against sustain against and beat many defensive threats. Yveltal can also use Taunt in a sacrificial way to give a teammate a free chance to set up.
* If there are no obvious Yveltal checks on Team Preview, it is likely that the enemy's unrevealed Arceus forme is capable of it in some way, so keep an eye out.
* In Yveltal mirror matchups, note that the slower Yveltal will usually come out on top due to receiving Oblivion Wing recovery after draining the enemy Yveltal's HP.
* While Yveltal can take advantage of Primal Groudon's use of Stealth Rock or Precipice Blades, it can still be a very risky matchup. Primal Groudon's coverage moves such as Rock Tomb, Stone Edge, or and Overheat can catch out an aggressive Yveltal and put it in a very bad situation, most likely leading to its KO.

Team Options
========

* Life Orb Yveltal best fits teams of an offensive nature. As an offensive Ground-type immunity Ground-immune Pokemon with difficult to handle difficult-to-handle attacks and a potential priority move, offensive teams will greatly appreciate Yveltal's many capabilities.
* Primal Groudon stands out as an excellent partner, with many variants of it able to assist Yveltal and vice versa. Generally, Primal Groudon puts pressure onto the Fairy- and Rock-type Pokemon that can scare Yveltal, while Yveltal heavily threatens Primal Groudon's defensive checks such as Lugia and Giratina. Stealth Rock variants of Primal Groudon appreciate Yveltal's ability to pressure Defog users, while more offensive sets can break through the many support Arceus formes that trouble Yveltal.
* Necrozma-DM is another excellent partner that can create a potent core with Primal Groudon involved. Necrozma-DM adds additional Fairy-type security and offensive pressure, while Yveltal can handle enemy Dark-, Ground-, and Ghost-type attacks directed at Necrozma-DM. Necrozma-DM can also act as a Stealth Rock setter with the longevity to repeatedly take on Fairy-type threads for Yveltal.
* Xerneas, when combined with Yveltal, adds additional wallbreaking pressure to a team. Geomancy variants appreciate Yveltal's ability to chip away at Magearna, (RC) while also threatening Necrozma-DM and Primal Groudon. Choice Scarf Xerneas offers revenge killing utility against Pokemon such as Marshadow and Ultra Necrozma along with cleric support, meaning Yveltal isn't as hard pressed to offensively check them with Sucker Punch.
* Mega Gengar is also an effective partner that can trap and remove Yveltal's biggest check in Arceus-Fairy while also threatening to trap many other support Arceus formes. It can also revenge kill Ultra Necrozma, which is helpful on teams where Yveltal opts for Toxic over Sucker Punch.
* Extreme Killer Arceus benefits offensive teams greatly by adding additional priority and therefore revenge killing potential, while Yveltal helps against the Ghost-types that can trouble it.
* Arceus-Water is a great support Arceus forme for bulkier teams that adds a check to many Primal Groudon variants, particularly special variants. It also assists with Necrozma-DM, Ho-Oh, Mega Salamence, and Mega Lucario, (RC) and can pivot on Primal Kyogre, all of which can help take pressure off Yveltal should they prove threatening to it.
* Arceus-Ground can opt for either a Swords Dance or a Calm Mind set to act as an extra soft check to Primal Groudon and Necrozma-DM for Yveltal. In return, Yveltal can heavily pressure the Ground-type immune Ground-immune Pokemon such as Celesteela, Skarmory, and Giratina-O to make room for Arceus-Ground to do work.
* Sticky Web teams with Smeargle as the entry hazard setter can benefit from Yveltal's ability to outspeed and break through defensive cores with Sticky Web active. Arceus formes in particular become easy targets for Yveltal under Sticky Web, (AC) as the likes of Arceus-Water are easily 2HKOed and vulnerable to a faster Taunt. Yveltal's access to Taunt and Sucker Punch further reinforce reinforces its potential on Sticky Web teams, as Yveltal can Taunt many Defog users to keep Sticky Web up and prevent setup sweepers from turning the tables against Yveltal's team, with Sucker Punch as added security.

[SET]
name: Choice Scarf
move 1: Foul Play
move 2: Dark Pulse
move 3: Oblivion Wing
move 4: U-turn / Defog
item: Choice Scarf
ability: Dark Aura
nature: Modest
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Foul Play is a key move for Choice Scarf Yveltal, as one of the main purposes behind this set is to outspeed and take advantage of Swords Dance-boosted Arceus formes, Necrozma-DM, Mega Lucario, Ultra Necrozma, and Primal Groudon. It also hits Ho-Oh, Mega Mewtwo Y, and Primal Kyogre harder than Dark Pulse does on this set.
* Dark Pulse is a more consistent damage option, helpful for cleaning up weakened teams. It may lack in power against sufficiently bulky neutral targets such as most Arceus formes, however.
* Oblivion Wing on a Choice Scarf set helps to revenge kill Fighting-types such as Marshadow and clean up against weakened Dark-type resistant Dark-resistant Pokemon. It also aids Yveltal by recovering lets Yveltal recover from the residual damage taken from the likes of Stealth Rock over the course of the match.
* U-turn allows Yveltal to act as a pivot, forcing out a Pokemon and letting a teammate take full advantage of the free switch. Due to Yveltal's lower damage output in comparison to wallbreaker sets and the locked move choices, U-turn can be a safer option than attacking with typical moves.
* Defog is a viable alternative to U-turn that adds extra anti-hazard safety for Yveltal's team. This can come in very handy against offensive teams that utilize a dedicated lead, as once the lead is gone, Yveltal is able to outspeed many opposing Pokemon and prioritize the removal of entry hazards such as Sticky Web.

Set Details
========

* Maximum Special Attack and Speed investment gives Yveltal the optimal stats to play as be (we ain't playin' where we're goin', boy) a revenge killer for its team. A Modest nature is preferred to increase the power behind Yveltal's special attacks and help with cleaning up teams.
* Using a Choice Scarf with a Modest nature allows Yveltal to outspeed the entire unboosted metagame excluding Deoxys-S. The extra Speed from a Timid nature doesn't outspeed any additional threats of relevance outside of +1 Adamant Mega Blaziken.
* A bulkier spread of 124 Def / 200 SpA / 184 Spe with a Modest nature allows Yveltal to take a +2 Extreme Speed from Extreme Killer Arceus variants that don't use a damage boosting damage-boosting item, (RC) while outspeeding everything up to Timid Mega Mewtwo Y.

Usage Tips
========

* Choice Scarf Yveltal is primarily a revenge killer. This means that it is best brought in under very safe conditions to remove a problematic threat to its team. Fast attackers weak to Yveltal's STABs STAB moves are easy targets. Most of these Pokemon are also weak to U-turn, meaning that even if they switch out, Yveltal can retain momentum for its team.
* This set can also play as a late game cleaner against a group clean groups of weakened Pokemon late-game, but Yveltal's checks should be taken care of first.
* Note that Yveltal's damage output can be lacking against bulky targets such as support Arceus, Primal Kyogre, and Ho-Oh, (AC) and support Arceus formes. Choice Scarf variants rely on Foul Play or taking advantage of a Pokemon's weakness to pose a threat to a team. U-turn can prevent Yveltal from being a momentum sink should this become a problem, but opponents can take advantage of this by not switching should it be a realistic option.
* Choice Scarf Yveltal is still slower than a couple of boosting threats, even with a Timid nature. Rock Polish Primal Groudon and Necrozma-DM, as well as Dragon Dance Mega Salamence will still be faster than Yveltal after a boost, so it is usually futile to attempt to revenge kill them in this manner.
* Keep Yveltal around and healthy so that it can act against Swords Dance-boosted threats. Taking risks when potential threats such as a Swords Dance Arceus forme is formes are unrevealed can be very detrimental.
* Defog should mainly be used in situations where Yveltal has forced a Pokemon out and an entry hazard hazards must be removed at all costs. Being locked into Defog against a Pokemon unafraid of Yveltal will likely result in giving over a large advantage to the enemy team.
* Remember that locking into a move can be taken advantage of, even if the attack was correct against Yveltal's current target. Another threat can come in right after and take advantage of a Choice-locked Yveltal.
* Choice Scarf Yveltal has a very good matchup against Psychic Terrain teams, as it will outspeed and likely be able to take out the primary wallbreakers and sweepers of such a team teams.

Team Options
========

* Choice Scarf Yveltal is very strong against offensive teams, but it struggles with bulkier teams due to a its lack of damage output and generally finding a lower amount number of Pokemon to revenge kill. Teams with a clear weakness to threatening fast Pokemon like Ultra Necrozma and Marshadow will likely consider this variant of Yveltal.
* Primal Kyogre is a great partner for this Yveltal set, as it can soft check Necrozma-DM and mixed Rock Polish Primal Groudon and Necrozma-DM, two threats that can outspeed even Choice Scarf Yveltal after a Rock Polish. In return, Yveltal performs well against the fast attackers that try to KO Primal Kyogre by taking advantage of its low Speed.
* Stealth Rock and + Swords Dance variants of Primal Groudon can be effective as well, setting Stealth Rock against bulky teams while heavily threatening support Arceus formes that trouble this set with a Swords Dance-boosted Precipice Blades. In return, Yveltal threatens Giratina, Lugia, and the fast attackers that can revenge kill Primal Groudon.
* Arceus-Water can play a more defensive role over Primal Kyogre, having the bulk and recovery to better check Rock Polish Primal Groudon and Necrozma-DM, (RC) while being a great option against Dragon Dance Mega Salamence, another threat that this Yveltal variant is likely to be slower than. Choice Scarf Yveltal can revenge kill the fast Psychic-type Pokemon such as Mewtwo, Deoxys-A, and Ultra Necrozma that threaten to take out Arceus-Water.
* Necrozma-DM offers much needed much-needed help against Fairy-type Pokemon and can use Yveltal's U-turn to get immediate immediately pressure against many of the enemy's Yveltal checks.
* Mega Gengar can trap and remove targets with the assistance of a U-turn pivot, (RC) while threatening many bulky targets that take Yveltal's weaker attacks well.

[SET]
name: Stallbreaker
move 1: Dark Pulse / Foul Play
move 2: Toxic
move 3: Taunt
move 4: Roost
item: Dread Plate / Leftovers
ability: Dark Aura
nature: Timid
evs: 252 HP / 72 SpD / 184 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse on a stallbreaker set is rather weak in comparison to offensive sets, but it helps to chip and break through targets that much faster more quickly. The flinch chance can also prevent Pokemon from standing up to Yveltal. It also helps to have an immediate damage option against offensive Pokemon, as waiting for Toxic damage to rack up can be very risky or wouldn't be an available strategy against Poison- or Steel-type Pokemon.
* Foul Play is a viable alternative attack that takes advantage of the stats of enemy Pokemon foe's Attack stat, dealing more damage to offensive Pokemon than Dark Pulse would without a boost, and it also lets Yveltal act as a defensive check to boosting attackers such as Extreme Killer Arceus and Primal Groudon. Using Foul Play means that defensive Pokemon such as Ferrothorn that don't mind the damage from it or Toxic will take longer to go be harder to take down, however.
* Toxic is this set's main way to damage opponents and break through defensive targets. By outlasting the opponent foe with Roost and preventing their own recovery options with Taunt, this Yveltal set can be a very difficult thing for defensive Pokemon such as Blissey, Ferrothorn, support Arceus formes, and defensive Zygarde-C to handle.
* Taunt prevents enemy recovery, entry hazards, and prevents opponents foes from recovering, setting entry hazards, and using setup moves in an attempt to power through Yveltal.
* Roost keeps Yveltal healthy and is a superior option to Oblivion Wing for better longevity, as this set aims to stay in battle against defensive Pokemon. Oblivion Wing needs high damage output to offer sufficient healing, something this Yveltal variant lacks in which this variant of Yveltal lacks.

Set Details
========

* Maximum HP investment makes good use of Yveltal's high base HP stat, making it difficult to break for many defensive Pokemon and some offensive Pokemon. With the additional 72 Special Defense EVs, Yveltal is capable of avoiding the 4HKO from a support Arceus's Ice Beam if factoring in Leftovers recovery.
* 184 Speed EVs and a Timid nature ensures ensure that Yveltal will outspeed positive natured positive-natured base 90 Speed Pokemon and many other defensive Pokemon in the tier, allowing for a fast Taunt or Toxic before they can act against Yveltal.
* Maximum Speed investment is an option to outspeed Lunala and Rayquaza.
* Dread Plate that allows Dark Pulse to cleanly 2HKO Mega Sableye, improving Yveltal's matchup against very defensive teams at the cost of passive recovery.
* Leftovers provides passive recovery, (AC) which is helpful to negate weak attacks and Stealth Rock damage without forcing unnecessary Roost usage. As this set doesn't aim to be a check to specific Pokemon, Leftovers is ideal for sets that want longevity.


Usage Tips
========

* Stallbreaker Yveltal aims to be a big annoyance to bulky teams, taking weak attacks and taking down defensive Pokemon via Toxic stalling or repeated use of Dark Pulse while limiting their options to fight back with Taunt. Common targets include most defensive Steel-types such as Ferrothorn and Celesteela, as well as support Arceus formes.
* This set should be spreading Toxic and using Taunt to prevent enemy Pokemon from using recovery moves or using utility options against Yveltal and its team.
* This variant can be less useful against offensive teams. Toxic stalling and weaker Dark Pulses can generally be ignored by most offensive Pokemon, but a fast Taunt or Foul Play can prevent them from taking too much advantage of Yveltal. It is still bulky enough to stand up to attacks and get a Toxic onto badly poison threatening sweepers such as Calm Mind Arceus-Ground, (RC) and is capable of wearing down threats that the team can have trouble dealing with.
* A healthy Yveltal can stand unafraid of Magearna and aim to Taunt it to prevent Heal Bell. If Yveltal takes a Fleur Cannon for the trouble, it can Roost off the damage.
* When facing bulky teams it should be ensured that Yveltal is avoiding excessive exposure to Toxic itself. This is a common move from defensive teams, and if Yveltal isn't correctly supported with a cleric, it will fall to Toxic damage before having a real impact.
* Mega Sableye and Mega Diancie are annoying matchups for this Yveltal variant, as Magic Bounce in particular makes Yveltal hesitant to use Taunt or Toxic. Without Dread Plate, Mega Sableye can avoid the 2HKO from Dark Pulse as well, making it more frustrating to break past. Mega Diancie can abuse take advantage of this set rather well, (RC) but is a rare sight.

Team Options
========

* Stallbreaker Yveltal sets are best suited to balance teams that can add additional bulky Pokemon and partners that can help this Yveltal set's matchup against offensive teams. This Yveltal variant adds a good way to combat very defensive teams for balance teams that can struggle to break through otherwise. Cleric Providing cleric support for Yveltal and playing around the potential enemy cleric is key to success.
* Primal Groudon's Swords Dance and Stealth Rock set is a great partner to apply pressure on defensive cores and check troublesome Fairy-types for Yveltal.
* Choice Scarf Xerneas stands out as an excellent partner that tackles many offensive Pokemon, threaten threatens Mega Sableye, and provide provides key cleric and Defog support for this Yveltal set.
* Heal Bell Magearna is an alternative cleric that comes with better longevity while adding a check to enemy Dark- and Fairy-type Pokemon.
* Spikes users such as Ferrothorn are excellent partners, as Yveltal can make great use of the switches it forces to rack up Spikes damage and stall out enemy Defog users.
* Marshadow is a great revenge killer to help Yveltal against offensive teams and pressure defensive cores and Fairy-types together. This can come from Z-Move Marshadow or the Life Orb variant.
* Celesteela can help against offensive Arceus-Ground variants and Ultra Necrozma. (AP)
* Calm Mind Arceus-Ground performs very well against offensive teams and can offensively check Swords Dance Primal Groudon and Necrozma-DM, something which Yveltal can't reliably check.
* Mega Gengar can make use of Yveltal's status spreading to boost Hex and trap various threats much easier more easily.
* Arceus-Water is one of the better support Arceus formes on a bulky team teams, helping Yveltal against special Primal Groudon variants, offensive Ho-Oh, Necrozma-DM, and Mega Salamence.

[SET]
name: Choice Specs
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: U-turn
move 4: Heat Wave
item: Choice Specs
ability: Dark Aura
nature: Timid
evs: 4 Def / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse from a Choice Specs Yveltal is deadly to teams that lack a strong Dark-type resistance Dark-resistant Pokemon, as it will pick up clean 2HKOes 2HKOs on Mega Diancie and maximum HP Arceus formes and Mega Diancie, a 3HKO against offensive Xerneas variants, and a 3HKO on Ho-Oh without worrying about Life Orb recoil damage.
* Oblivion Wing will 2HKO offensive Xerneas and Primal Groudon, and enjoys the extra power from Choice Specs to boost boosts Yveltal's own recovery, meaning this set tends to stick around longer, (AC) as Life Orb recoil isn't a concern.
* U-turn can avoid guessing games between Yveltal's STAB moves and scout for the opponent's switch-ins. U-turn can also have the advantage of disguising Yveltal's set, as both Choice item sets it commonly uses are very likely to have U-turn, adding a surprise factor when Yveltal reveals its damage output against various targets.
* Heat Wave is Yveltal's preferred coverage move on this set, targeting one of the best checks to Yveltal in Magearna for a clean 2HKO, (RC) while and also doing high damage to Klefki. It will also OHKO Ferrothorn and Mega Scizor, two Pokemon that can take Yveltal's other moves at least once.
* Focus Blast is Yveltal's best option against Tyranitar, OHKOing any set that lacks Chople Berry after Stealth Rock damage and deals very high damage to Arceus-Dark while retaining higher damage against Magearna than Yveltal's STAB moves, at the cost of lowered accuracy.
* Hurricane is an alternative very strong attack that can fit into moveslots 3 or 4 the third or fourth moveslot, outdamaging dealing more damage than Dark Pulse against neutral targets an is one of the only attacks that can 2HKO 2HKOing Arceus-Dark and Arceus-Fairy, but it comes with shaky accuracy.

Set Details
========

* With maximum Special Attack and Speed EVs backed up by Choice Specs and a Timid nature, Yveltal is able to outspeed the crowded Speed tier below it and output more damage than Life Orb sets, at the cost of locked attacks.
* A Modest nature can be considered for maximum wallbreaking power, increasing the odds of Oblivion Wing 2HKOing support Arceus formes after Stealth Rock damage, (RC) and gaining and increasing the odds for Focus Blast to OHKO Fighting-weak Arceus formes weak to the attack, (RC) while giving Dark Pulse even more power.

Usage Tips
========

* Choice Specs Yveltal aims to be a wallbreaker, exchanging move flexibility for the freedom to run a Timid nature, stronger attacks, better longevity, and the ability to generate momentum with U-turn when compared to Life Orb sets.
* This Yveltal variant punishes opponents that use less strong checks to it, but against teams that employ strong Yveltal answers such as Arceus-Fairy, Magearna, and Tyranitar, it may be forced to use U-turn more often to avoid giving away momentum.
* Make use of the extra power given from Choice Specs to break through teams that employ weaker checks to Yveltal such as Ho-Oh and support Arceus formes neutral to Dark Pulse and Ho-Oh. The lack of Life Orb recoil means that Recover stalling this Yveltal variant isn't an option for bulky teams.
* A well timed Heat Wave against teams using Magearna can open a playground for Yveltal to spam Dark Pulse and force the opponent to aggressively take Yveltal down with faster attackers or else risk losing crucial walls.
* Choice Specs-boosted Oblivion Wing can make Yveltal annoying to take down due to the amount of healing it can generate for itself. Yveltal's STAB attacks do have common resistances on teams, so be careful what Yveltal is locked into or things can backfire.
* If in doubt between choosing attacks, U-turn can be a safe play, provided Yveltal has teammates to take advantage of any momentum generated or have a fallback if the opponent didn't switch out.

Team Options
========

* Choice Specs Yveltal focuses purely on wallbreaking and momentum generation. Balance and bulky offense team structures are able to utilize some defensive teammates to help cover for this set's main weaknesses - Fairy-types weaknesses—Fairy-types (—=—) and faster attackers.
* Mega Gengar stands out as one of the best partners to Choice Specs Yveltal. It can trap and eliminate Arceus-Fairy and Xerneas, and it can do so with greater ease with the help of Yveltal's U-turn. Yveltal's ability to switch into many attacks that trouble Mega Gengar lets it pair well defensively, and the two can combine to form a formidable wallbreaking duo. An important trait that Mega Gengar brings is the ability to revenge kill Ultra Necrozma, something that can be very threatening to balance teams.
* Mega Scizor can work alongside Yveltal to check Fairy-types and form a U-turn core that can help get each other get into battle against their ideal targets. Magearna can perform a similar role with Volt Switch.
* Defensive Zygarde-C can use Glare to slow down support Arceus formes so that this Yveltal variant can break through them, while also providing and it is also a good check to Primal Groudon, Necrozma-DM, and Ho-Oh.
* Primal Groudon always fits well with Yveltal, checking Fairy-types and Primal Kyogre while also bringing utility with Stealth Rock setting, additional wallbreaking, or sweeping potential based on the chosen set.
* Choice Scarf Xerneas is a great partner that can act as a check to many offensive Pokemon to help make up for Yveltal's lack of Sucker Punch, (RC) while also providing cleric support.
* Arceus-Water can be a key support Arceus forme to assist Yveltal against the likes of special Primal Groudon variants, Ho-Oh, and Mega Salamence, (AC) and special Primal Groudon variants.

[SET]
name: Defensive
move 1: Foul Play
move 2: Roost
move 3: Toxic / Taunt
move 4: Sucker Punch / Defog / Taunt
item: Charti Berry / Dread Plate
ability: Dark Aura
nature: Impish / Bold
evs: 252 HP / 176 Def / 80 Spe

[SET COMMENTS]
Moves
========

* Foul Play is Yveltal's main method of punishing physical attackers such as Primal Groudon, Necrozma-DM, and Ultra Necrozma, as they are liable to be OHKOed by this Yveltal set before breaking past it. Foul Play also does considerable damage to Primal Kyogre, offensive Ho-Oh, and Mega Salamence, as well as severely damage other foes that are weak to the attack.
* Roost keeps Yveltal healthy which is be very important to counteract Stealth Rock damage and keep Yveltal away from the KO range of many boosted attacks from the likes of Primal Groudon, Mega Salamence, and other physical attackers.
* Toxic can punish support Arceus formes and Xerneas that, (AC) which otherwise switch into Yveltal's other moves easily.
* Sucker Punch can be a necessary evil to quickly finish off foes that are weakened by Yveltal itself or its teammates. In situations where Yveltal is slower than foes such as Ultra Necrozma or Double Dance Necrozma-DM and is in the range of a boosted attack, Sucker Punch can make all the difference.
* Defog is a potential option, as Yveltal can contend with some entry hazard setters such as Primal Groudon, Skarmory and Ferrothorn and remove any Spikes or Stealth Rock set against Yveltal's team successfully.
* Taunt is a viable option in slots 3 or 4 the third or fourth moveslot, as it can combine well with any of Toxic, Sucker Punch, or Defog for various results. Taunt and Toxic can greatly annoy defensive walls, Taunt and Sucker Punch can limit the moves of foes and better handle offensive Pokemon, while Taunt and Defog can prevent defensive Pokemon from using utility moves against Yveltal while it clears any set entry hazards.

Set Details
========

* 252 HP EVs and 180 Defense EVs give Yveltal maximum physical bulk, letting it take on many of the physical attackers in the tier. An Impish nature is preferred on sets with Sucker Punch to avoid harming its damage output, but a Bold nature works well on sets without it to reduce opposing Foul Play and confusion damage.
* 80 Speed EVs ensure that Yveltal is faster than Adamant Necrozma-DM, (RC) so that it can use Foul Play first before taking an attack.
* Charti Berry is a necessary evil so that Yveltal isn't simply OHKOed by a boosted Stone Edge from the likes of Primal Groudon, Ultra Necrozma, and Swords Dance Arceus-Ground, especially if Stealth Rock damage is not avoidable.
* Dread Plate is a potential alternative that boosts the power of Foul Play to the point that it can OHKO a boosted Extreme Killer Arceus and Mega Lucario from full HP at the cost of fearing boosted Rock-type moves from the aforementioned physical attackers. Dread Plate also gives Sucker Punch a very helpful power boost, allowing Yveltal to have good odds to OHKO Ultra Necrozma after Stealth Rock damage.
* Leftovers can also be considered to help with passive recovery, but this leaves Yveltal prone to physical attackers with Rock-type coverage.

Usage Tips
========

* Physically defensive Yveltal is just as it sounds - sounds: a physical wall that aims to check numerous threatening physical attackers such as Primal Groudon, Mega Salamence, Ultra Necrozma, Marshadow, and Swords Dance Arceus-Ground.
* It should be noted that this Yveltal variant is far from a truly reliable answer to all physical attackers and acts more like a band aid patch (?) than a true physical wall. A Yveltal's lack of resistances to many of the boosted attacks it will be taking means that any fights fight with one of these threats will be a very close call, and certain conditions such as Stealth Rock being up, an unexpected attack, or a lack of Charti Berry will result in Yveltal getting destroyed by the attackers it would attempt to check.
* Yveltal should ideally be kept healthy and switched should switch into these attackers immediately to attempt to deal with them. If Yveltal comes in too late or is too weakened, it can only aim for a surprise Sucker Punch before going down. The problem with this is that without scouting the sets of Pokemon like Ultra Necrozma, Primal Groudon, and Arceus-Ground, Yveltal may well be switching into an unfavorable matchup if they are special attacking specially offensive variants. Assess carefully.
* Sucker Punch can be a surprise to opponents that see a bulky and slower Yveltal, meaning that frail and faster attackers weak to Sucker Punch may try their luck. If Yveltal's full moveset isn't revealed, this Yveltal set can keep opponents on their toes.
* Spreading Toxic and using Taunt on slower Pokemon is still a viable way to get use out of this set. Yveltal's base Speed is higher than the majority of defensive Pokemon, and the bulk investment means that taking weak attacks is easy.

Team Options
========

* Physically defensive Yveltal sets generally aren't meant to be built around, as it isn't reliable enough in practice and has some key weaknesses depending on the item and move choice choices. This Yveltal variant adds additional security against physical attackers for teams that find themselves weak near the end of the teambuilding process. Teams that are using more creative builds can find themselves using physically defensive Yveltal to patch up obvious holes.
* Stealth Rock Primal Groudon sets offer solid checking checks to Fairy-types and Primal Kyogre while setting the entry hazard to punish the switches this Yveltal variant will force from physical attackers.
* Necrozma-DM is a capable teammate that fits as a specially defensive wall aimed to tackle support Arceus formes and set Stealth Rock.
* Ferrothorn can check most Fairy-types and set Spikes to punish the switches that Yveltal and its team forces.
* Arceus-Water and Arceus-Ground can both fit as a check to special Primal Groudon and Necrozma-DM. Charti Berry variants of this Yveltal set can handle Swords Dance Ultra Necrozma and Primal Groudon in return.
* Toxapex is a helpful partner to set Toxic Spikes, annoy Fairy-types, and be difficult to take down for defensive Pokemon that try to wall Yveltal.
* Choice Scarf Xerneas helps to keep Yveltal from getting overwhelmed by physical attackers such as Marshadow while providing Defog and Aromatherapy support.

[STRATEGY COMMENTS]
Other Options
=============

* A Choice Band set can pose a threat to bulky teams when combined with a trapper that can deal with support Arceus formes, but it can lack the flexibility of other sets. It also cannot fit a move that offers longevity such as Roost or Oblivion Wing, meaning that it is a frailer in practice when compared to every other Yveltal set.
* Flyinium Z is possible with Sky Attack on a physical set or with Hurricane on a special set, but it lacks a real use that other sets can't already offer.
* Darkinium Z is also possible with one of Yveltal's many Dark-type STAB options, (RC) but doesn't have a real purpose other than one strong attack against a target. The use of a Z-Move is far better utilized by other Pokemon that can pair with Yveltal such as Necrozma-DM.
* Substitute can take advantage of Yveltal's ability to force switches, and with Disable, it can punish Pokemon that only have one ideal move to break Yveltal's Substitutes. This requires using up 2 two of Yveltal's moveslots to accomplish, however, and there are better options to consider.

Checks and Counters
===================

**Fairy-types**: Arceus-Fairy stands out as the best answer to Yveltal, outspeeding it and taking all of its attacks while only fearing Toxic or a lucky Choice Specs Yveltal that has Hurricane. U-turn can also throw a wrench into the matchup, as Yveltal has many potential partners that can easily take advantage of an Arceus-Fairy such as Necrozma-DM and Mega Gengar. Xerneas is a common offensive check that can pivot into Dark Pulse and force Yveltal out while having the option to deal with the potential Toxic poison Yveltal has spread with Aromatherapy, but it has to be careful about taking too much damage from an offensive set's Oblivion Wing. Magearna resists many of Yveltal's moves outside of Heat Wave and has the bulk to repeatedly switch in, (RC) while also having the ability to remove any status Yveltal has spread, but it can be taken advantage of with U-turn or worn down by repeated attacks. Mega Diancie resists both of Yveltal's STAB attacks, has Magic Bounce to mess with the utility options that various sets utilize, and generally outspeeds most sets, but it lacks the defensive stats to repeatedly stand up to offensive Yveltal's attacks.

**Rock-types**: Tyranitar and the rare Arceus-Rock make for good Yveltal checks. Tyranitar resists most of Yveltal's common attacks and takes little damage thanks to the Special Defense boost from sand, but it has to be wary of Yveltal U-turn pivoting on it or a rare Focus Blast. Arceus-Rock is naturally faster than Yveltal and can strike it down with Judgment while healing off Dark Pulse damage with Recover, but it can have the same fears as Tyranitar.

**Arceus-Dark**: Arceus-Dark's ability to outspeed and avoid the 2HKO from all of Yveltal's attacks make makes it a reasonable check, as it can retaliate with Ice Beam or cripple Yveltal with Toxic. Yveltal is capable of winning based on various conditions, however. The Life Orb set can use a combination of Oblivion Wing, Taunt, (AC) and Toxic to break through Arceus-Dark's healing and win in a fight. Choiced sets are able to use U-turn to pivot off of Arceus-Dark into a suitable teammate and eventually wear it down. Stallbreaker and physically defensive sets only fear Arceus-Dark's higher Speed, which can lead to it getting a using Toxic on Yveltal before it can do the same to try and stall Arceus-Dark out.

**Ho-Oh**: Ho-Oh is sufficiently bulky enough to take Yveltal's special attacks and try to get a Toxic onto badly poison Yveltal before pivoting out and recovering damage with Regenerator. Ho-Oh can also Recover stall until Yveltal weakens itself with Life Orb recoil, but this comes with the risk of a Dark Pulse flinch. Knock Off variants of Life Orb Yveltal can also deal a lot of damage to Ho-Oh, potentially 2HKOing it if it switches into Dark Pulse. Foul Play will also deal considerable damage to offensive Ho-Oh sets. Stealth Rock being up can massively limit Ho-Oh's ability to check Yveltal as well.

**Faster Attackers**: Pokemon with a higher base Speed than Yveltal such as Mega Salamence, Mega Lucario, Ultra Necrozma, Mewtwo formes, (megas aren't formes) and Deoxys-A are capable of dealing enough damage to take Yveltal out. These Pokemon have to be very careful, however, as Yveltal is capable of taking a single hit from the majority of them. There is also the potential of Sucker Punch from the Life Orb and physically defensive sets, and these faster attackers are also ideal targets of the Choice Scarf set, which will reverse the matchup.

**Support Arceus Formes**: Maximum HP Arceus formes neutral to Dark Pulse such as Arceus-Ground and Arceus-Water are able to switch into Life Orb Yveltal and Recover stall until Life Orb recoil wears Yveltal down into the range of an attack such as Ice Beam. Taunt variants of Life Orb Yveltal are able to trade blows with these support Arceus formes and potentially win a duel, but they will come out severely damaged. Choice Specs Yveltal can easily overpower these support Arceus formes. Choice Scarf has the ability to pivot out with U-turn to a better suited better-suited teammate, but its attacks will struggle to break through a support Arceus. Stallbreaker and physically defensive Yveltal variants will only be annoyed if they are badly poisoned by Toxic first, (RC) but will still stall out these support Arceus formes either way.

**Blissey and Chansey**: Blissey and Chansey have the bulk to handle Yveltal's special attacks with ease, but they are only effective checks to Choice item variants, and Yveltal can still use U-turn on these sets to avoid these Pokemon. Taunt variants of Yveltal will easily shutdown shut down any attempts that Blissey and Chansey make to check it, and Taunt is commonly seen on any variant that isn't holding Choice Scarf or Choice Specs.

**Electric- and Ice-Types Ice-types**: Dedicated Electric- and Ice-type attackers are very rare in Ubers, (RC) but make good offensive checks to Yveltal regardless. The likes of Tapu Koko, Zekrom, and Kyurem-W are more than capable of OHKOing Yveltal if given the chance, but they can struggle to switch in safely.

**Mega Sableye**: While Mega Sableye cannot stand up to offensive Yveltal's attacks, it will take Foul Play with ease, and Magic Bounce can make Yveltal paranoid about using utility moves such as Taunt or and Toxic, making it more difficult to break through defensive teams. A well timed bounce can force stallbreaker and physically defensive Yveltal variants to switch, as it will therefore struggle to effectively break through other Yveltal checks such as support Arceus formes and Blissey without access to Taunt.

**Status**: Toxic and Paralysis can be very crippling to Yveltal, with higher effectiveness depending on the set. Defensive and stallbreaker sets will hate getting badly poisoned, while paralysis will affect Yveltal's offensive abilities. Burns are also annoying to Foul Play Yveltal variants, as it will halve the damage of Foul Play and make it much more difficult to use it against enemy Pokemon effectively.

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frenzyplant

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[OVERVIEW]

* Yveltal is a commonly seen and versatile powerhouse in the tier that is capable of filling multiple different roles as a result of its great attributes such as its stat distribution, typing, and damage-boosting ability, with a great (maybe change to a different word, as you already say "great") movepool to complement all of these traits.
* Offensively, Yveltal is a very strong wallbreaker that can easily fit into offensive teams thanks to its difficult-to-handle STAB attacks, which are able to 2HKO a large amount of the tier on their own, leaving a lot of room for customization based on the team structure it is selected for.
* Yveltal is also one of the tier's best offensive checks to many of the metagame's most threatening Pokemon, such as Primal Groudon, Necrozma-DM, and Marshadow. It is difficult for Yveltal to be of little use in battle even with offensive sets, as it adds much-needed role compression to offensive teams. Defensive sets further improve on Yveltal's ability to handle top threats and provide utility to bulkier teams.
* Yveltal's versatility allows it to be a wallbreaker, a Choice Scarf revenge killer, a dedicated stallbreaker, or even a defensive physical wall.
* While base 99 Speed is sufficient for wallbreaking purposes, Yveltal tends to be reliant on its reasonable bulk, hit-and-run strategies, Sucker Punch, or a Choice Scarf set to avoid being revenge killed or dealt with by faster Pokemon, as many teams will have a faster attacker than Yveltal that can get the better of it.

[SET]
name: Life Orb
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: Taunt
move 4: Sucker Punch / Toxic
item: Life Orb
ability: Dark Aura
nature: Mild
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse is Yveltal's primary attack. With Life Orb, Dark Aura, and a Special Attack-boosting nature, it is strong enough to 2HKO foes as bulky as support Arceus formes neutral to the move, making it Yveltal a fearsome wallbreaker and forcing teams to pack a Dark-resistant Pokemon or a special wall that can handle the attack.
* Oblivion Wing has great neutral coverage alongside Dark Pulse, hitting Fairy-type switch-ins such as Xerneas for a 2HKO and healing 75% of the damage dealt. This (optional structural change that separates Oblivion Wing's good coverage from the healing effect, which may make the structure of this bullet point more logical: put a period before this underlined section, and replace this underlined section with "Oblivion Wing also heals 75% of the damage dealt, which") comes in handy to counteract the residual damage from weak attacks, status damage, Life Orb recoil, and Stealth Rock damage. (redundant)
* Taunt prevents the usage of status moves against Yveltal's team, making it easier to break through bulky targets that cannot effectively duel against Yveltal's damage output. (I am not quite sure what this means? "that cannot effectively deal with Yveltal's damage output" or "that cannot effectively damage Yveltal" might be clearer, but if they could not 1v1 Yveltal anyway due to Yveltal's damage output, how does Taunt help?) It is also helpful against offensive teams, preventing offensive Pokemon such as Primal Groudon and Xerneas from using Yveltal as a setup target so that teammates can better handle them, or making a Taunted target a setup opportunity for a teammate. Taunt and Oblivion Wing can be enough to win a duel against some support Arceus formes.
* Sucker Punch further increases Yveltal's offensive abilities by letting it get the first hit in against would-be revenge killers such as Mega Gengar and adds a useful priority attack to support its team against faster threats, threatening and faster Pokemon, (or just "threatening faster Pokemon" could work) such as Ultra Necrozma and boosted Double Dance Necrozma-DM. Taunt and Sucker Punch can be a potent combination and can force mind games against targets if Yveltal is weakened.
* Toxic is a viable alternative (to Sucker Punch?) that takes advantage of the many switches Yveltal can force in order to spread status against poison difficult-to-break checks such as Arceus-Dark, Tyranitar, and Arceus-Fairy, weakening their effectiveness as consistent Yveltal switch-ins over the course of the match.
* Knock Off is another viable option that gives this Yveltal variant an easier time against Ho-Oh, breaks through Chansey and Blissey more quickly, and removes most common items used on switch-ins such as Magearna and Xerneas.
* Heat Wave is a viable option to deal with eliminate Magearna as a check, which can also help teammates such as Xerneas. (optional structural change, see next sentence) Repeated use of Dark Pulse can weaken Magearna to the range of enough for it to be KOed by (optional, more precise) a surprise Heat Wave and eliminate it as a check, which can also help teammates such as Xerneas. (optional structural change: I think it's more relevant to have this information in the first sentence of the bullet point) Heat Wave also has the ability to immediately OHKO Ferrothorn and Mega Scizor, avoiding a retaliation, as rather than being forced to deal with a retaliation while Dark Pulse 2HKOes them.

Set Details
========

* Maximum Special Attack investment with a Special Attack-boosting nature (as you discuss the choice of nature as an important decision later, this could be removed?) gives Yveltal maximum wallbreaking potential and reaches key damage benchmarks against various Arceus formes and Xerneas. (maybe list those benchmarks?)
* Maximum Speed investment gets the most out of Yveltal's Speed tier, outspeeding many other dangerous letting it outspeed threats such as Primal Groudon, Primal Kyogre, and Necrozma-DM. (threats are dangerous by definition)
* The choice of nature is an important decision to make with Life Orb Yveltal. Special Attack-boosting natures are optimal for damage output, as this set intends is intended to be a wallbreaker and the usage of Sucker Punch means that Speed-boosting natures are not as important. Speed-boosting natures can be useful on sets lacking Sucker Punch, as Yveltal can then outspeed Timid Lunala and Jolly Rayquaza to hit them first.
* By reducing Yveltal's Defense stat with the usage of ("With reduced Defense from" is a little more direct, but the original is grammatically fine) a Mild or Hasty nature, Yveltal is more susceptible to getting OHKOed by attacks from Rayquaza, Marshadow, and physical Primal Kyogre after Stealth Rock damage. Ultra Necrozma and Primal Groudon also gain better odds to OHKO Yveltal from full HP with Stone Edge.
* By reducing Yveltal's Special Defense stat with the usage of a Rash or Naive nature, the matchup against support Arceus formes becomes more difficult, and Yveltal's ability to offensively check Mewtwo, Giratina-O, and special variants of Primal Groudon comes with an increased risk of getting KOed.
* Life Orb is the best item to strengthen increase Yveltal's overall damage output (a strong damage output doesn't make as much sense) while retaining the flexibility of switching moves, which is an important aspect behind Yveltal's threat level.

Usage Tips
========

* Life Orb Yveltal aims to break down the enemy team while providing an offensive check to threats such as Primal Groudon, Necrozma-DM, and Marshadow.
* Yveltal can find room to switch in against Ground- and Ghost-type moves or on predicted moves that don't pressure it, Yveltal can easily switch into, such as entry hazards and recovery moves. (or something similar. "Yveltal can switch into moves that it can easily switch into" is a bit of a tautology)
* Keeping Yveltal sets with Sucker Punch around can be very helpful to stop setup sweepers from taking over the match. Ultra Necrozma and Mewtwo will have a hard time sweeping any team with a Sucker Punch Yveltal ready to revenge kill them. it. Having Sucker Punch available to take down a weakened Double Dance Necrozma-DM can also save a game.
* Yveltal's matchup against most of the metagame is favorable, making it a good candidate to lead with to force the opponent to act defensively. However, this isn't a foolproof plan. (elaborate on this last sentence? because the opponent can lead with a check?)
* Support Arceus formes can be difficult for (space) Yveltal to overcome, depending on the forme. Arceus-Fairy is the hardest obstacle (if it is the hardest Arceus forme matchup) for Yveltal to take down and is best hit on the switch with an attack or Toxic before switching to a suitable teammate. Arceus-Dark, Arceus-Water, and Arceus-Ground can be beaten under the right conditions, such as afflicting them with Taunt on the switch and recovering any damage taken with repeated use of Oblivion Wing.
* Dark Pulse is generally a safe option to use to wear down checks. Oblivion Wing is best used when Yveltal is low on health or on a predicted when you predict the opponent to switch to a Dark-resistant Pokemon. (for parallelism) Taunt is best used on defensive Pokemon to prevent entry hazards, recovery options, and status attacks from affecting Yveltal, (Taunt persists if Yveltal switches out, so i think this works a little better) but it can also be used to stop the plans of an offensive a setup sweeper (all setup sweepers are offensive) if Yveltal's team would be unable to handle it should Yveltal switch out. (I don't quite understand what this means, maybe because of the double conditional clause. perhaps "a setup sweeper that Yveltal's team would be unable to handle if Yveltal switched out" would be better?) Taunt + Oblivion Wing is a potent combination to sustain Yveltal (sustain needs an object) against (a little awkward. alternatively, you could use "sustain Yveltal and win in matchups against defensive threats"?) and beat many defensive threats. Yveltal can also use Taunt in a sacrificial way to give a teammate a free chance to set up.
* If there are no obvious Yveltal checks on in Team Preview, it is likely that the enemy's opponent's unrevealed Arceus forme is capable of it checking Yveltal in some way, so keep an eye out.
* In Yveltal mirror matchups, note that the slower Yveltal will usually come out on top due to receiving Oblivion Wing recovery after draining the enemy Yveltal's HP.
* While Yveltal can take advantage of Primal Groudon's use of Stealth Rock or Precipice Blades, it can still be a very risky matchup. Primal Groudon's coverage moves such as Rock Tomb, Stone Edge, and Overheat can catch an aggressive Yveltal and put it in a very bad situation, (this is a little repetitive, consider just "can put an aggressive Yveltal in a very bad situation"?) most likely leading to its KO.

Team Options
========

* Life Orb Yveltal best fits teams of an offensive nature. As it is an offensive Ground-immune Pokemon with difficult-to-handle attacks and a potential priority move, offensive teams will greatly appreciate Yveltal's many capabilities. (unless I am missing something, this essentially restates the first sentence of this bullet point. perhaps replace this bullet with "Life Orb Yveltal best fits teams of an offensive nature, as it is an offensive Ground-immune Pokemon with difficult-to-handle attacks and a possible priority move.")
* Primal Groudon stands out as an excellent partner, with many variants of it able to assist Yveltal and vice versa. Generally, Primal Groudon puts pressure onto the Fairy- and Rock-type Pokemon that can scare Yveltal, while Yveltal heavily threatens Primal Groudon's defensive checks such as Lugia and Giratina. Stealth Rock variants of Primal Groudon appreciate Yveltal's ability to pressure Defog users, while more offensive sets can break through the many support Arceus formes that trouble Yveltal.
* Necrozma-DM is another excellent partner that can create a potent core with Primal Groudon involved. Necrozma-DM adds additional Fairy-type security and offensive pressure and security against Fairy-types, while Yveltal can handle Dark-, Ground-, and Ghost-type attacks directed at Necrozma-DM. Necrozma-DM can also act as a Stealth Rock setter with the longevity to repeatedly take on Fairy-type threats for Yveltal.
* Xerneas, when combined with Yveltal, adds additional wallbreaking pressure to a Yveltal's team. Geomancy variants appreciate Yveltal's ability to chip away at Magearna while also threatening (is this referring to Geomancy Xerneas or Yveltal? if the former, perhaps "Magearna, and Xerneas can also threaten"; if the latter, "Magearna and its ability to threaten"?) Necrozma-DM and Primal Groudon. Choice Scarf Xerneas offers revenge killing utility against Pokemon such as Marshadow and Ultra Necrozma along with cleric support, meaning Yveltal isn't as hard pressed to offensively check them with Sucker Punch.
* Mega Gengar is also an effective partner that (this, and a couple other phrases, could be removed or condensed. this is mostly subjective and due to the overall length of this analysis, so I'll just indicate this with comments) can trap and remove Yveltal's biggest check in Arceus-Fairy while also threatening to trap many other support Arceus formes. It can also revenge kill Ultra Necrozma, which is helpful on teams where Yveltal opts for Toxic over Sucker Punch.
* Extreme Killer Arceus benefits offensive teams greatly by adding additional priority and therefore revenge killing potential, while Yveltal helps against the Ghost-types that can trouble it.
* Arceus-Water is a great support Arceus forme for bulkier teams that adds a check to many Primal Groudon variants, particularly special variants. It also assists with against (or "assists in handling" or similar) Necrozma-DM, Ho-Oh, Mega Salamence, and Mega Lucario and can pivot on into Primal Kyogre, all of which can help take helping to take ("all of which" seems to refer to the lists of Pokemon, which I don't think is what you mean?) pressure off Yveltal should they prove threatening to it. (is this just a reference to the fact that some sets can't take on Yveltal? most of these are in C&C)
* Arceus-Ground can opt for either a Swords Dance or a Calm Mind set to act as an extra soft check to Primal Groudon and Necrozma-DM for Yveltal. In return, Yveltal can heavily pressure the Ground-immune Pokemon such as Celesteela, Skarmory, and Giratina-O to make room for Arceus-Ground to do work. (could be more precise here. "to set up", "to wallbreak", "to sweep"?)
* Sticky Web teams with Smeargle as the entry hazard setter can benefit from Yveltal's ability to outspeed and break through defensive cores with Sticky Web active. Arceus formes in particular become easy targets for Yveltal under Sticky Web, as the likes of Arceus-Water are easily 2HKOed and vulnerable to a faster Taunt. (would it make more sense to switch these two around? "vulnerable to a faster Taunt and easily 2HKOed"?) Yveltal's access to Taunt and Sucker Punch further reinforces its potential on Sticky Web teams, as Yveltal can Taunt many Defog users to keep Sticky Web up and prevent setup sweepers from turning the tables against Yveltal's team, with Sucker Punch as added security.

[SET]
name: Choice Scarf
move 1: Foul Play
move 2: Dark Pulse
move 3: Oblivion Wing
move 4: U-turn / Defog
item: Choice Scarf
ability: Dark Aura
nature: Modest
evs: 4 Atk / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Foul Play is a key move for Choice Scarf Yveltal, as one of the main purposes behind this set is to outspeed and take advantage of Swords Dance-boosted Arceus formes, Necrozma-DM, Mega Lucario, Ultra Necrozma, and Primal Groudon. It also hits Ho-Oh, Mega Mewtwo Y, and Primal Kyogre harder than Dark Pulse does on this set.
* Dark Pulse is a more consistent damage option, helpful for cleaning up weakened teams. It may lack in power against sufficiently bulky neutral targets such as most Arceus formes, however.
* Oblivion Wing on a Choice Scarf set helps to revenge kill Fighting-types such as Marshadow and clean up weakened Dark-resistant Pokemon. It also lets Yveltal recover from the residual damage taken from the likes of Stealth Rock over the course of the match.
* U-turn allows Yveltal to act as a pivot, forcing out a Pokemon (think you could make the logical progression here a little clearer, as U-turn itself doesn't force out the opposing Pokemon. "switching into a check to force out a foe"?) and letting a teammate take full advantage of the free switch. Due to Choice Scarf Yveltal's lower damage output in comparison to wallbreaker sets and the its locked move choices, U-turn can be a safer option than attacking with typical moves.
* Defog is a viable alternative to U-turn that adds extra anti-hazard safety measures for Yveltal's team. This can come in very handy against offensive teams that utilize a dedicated lead, as once the lead is gone, Yveltal is able to outspeed many opposing Pokemon and prioritize the removal of remove entry hazards such as Sticky Web.

Set Details
========

* Maximum Special Attack and Speed investment gives Yveltal the optimal stats to be a revenge killer for its team. A Modest nature is preferred to increase the power behind Yveltal's special attacks and help with cleaning up teams.
* Using a Choice Scarf with a Modest nature allows Yveltal to outspeed the entire unboosted metagame excluding Deoxys-S. The extra Speed from a Timid nature doesn't let it outspeed any additional threats of relevance outside of +1 Adamant Mega Blaziken.
* A bulkier spread of 124 Def / 200 SpA / 184 Spe with a Modest nature allows Yveltal to take a +2 Extreme Speed from Extreme Killer Arceus variants that don't use a damage-boosting item while outspeeding everything up to Timid Mega Mewtwo Y.

Usage Tips
========

* Choice Scarf Yveltal is primarily a revenge killer. This means that it is best brought in under very safe conditions to remove a problematic threat to its team. Fast attackers weak to Yveltal's STAB moves are easy targets. Most of these Pokemon are also weak to U-turn, meaning that even if they switch out, Yveltal can retain momentum for its team.
* This set can also clean groups of weakened Pokemon, but Yveltal's checks should be taken care of by its teammates first. (or "its teammates should take care of Yveltal's checks first", as this set isn't taking care of its own checks but is the subject in the first clause here)
* Note that Yveltal's damage output can be lacking against bulky targets such as Primal Kyogre, Ho-Oh, and support Arceus formes. Choice Scarf variants rely on Foul Play or super effective moves taking advantage of a Pokemon's weakness to pose a threat to a team. U-turn can prevent Yveltal from being a momentum sink should this become a problem, but opponents can take advantage of this by not switching should it be a realistic option. (what is "it"? if it's "switching", I think you could remove this phrase and preserve the meaning. if not, I think you should clarify the meaning somehow)
* Choice Scarf Yveltal is still slower than a couple of boosting threats, even with a Timid nature. Rock Polish Primal Groudon and Necrozma-DM, as well as Dragon Dance Mega Salamence, (comma) will still be faster than Yveltal after a boost, so it is usually futile to attempt to revenge kill them when they are set up. in this manner.
* Keep Yveltal around and healthy so that it can act against Swords Dance-boosted threats. Taking risks when potential threats such as Swords Dance Arceus formes are unrevealed can be very detrimental.
* Defog should mainly be used in situations where Yveltal has forced a Pokemon out and entry hazards must be removed at all costs. Being locked into Defog against a Pokemon unafraid of Yveltal will likely result in giving over a large advantage to the enemy team.
* Remember that locking Yveltal into a move can be taken advantage of, even if the attack was correct the best against Yveltal's current target. Another threat can come in right after and take advantage of a Choice-locked Yveltal.
* Choice Scarf Yveltal has a very good matchup against Psychic Terrain teams, as it will outspeed and likely be able to take out the primary wallbreakers and sweepers of such teams.

Team Options
========

* Choice Scarf Yveltal is very strong against offensive teams, but it struggles with bulkier teams due to a lack of damage output and generally finding a lower number of Pokemon to revenge kill. Teams with a clear weakness to threatening fast Pokemon ("fast threats"?) like Ultra Necrozma and Marshadow will likely consider this variant of Yveltal.
* Primal Kyogre is a great partner for this Yveltal set, as it can soft check Necrozma-DM and mixed Rock Polish Primal Groudon, two threats that can outspeed even Choice Scarf Yveltal after a Rock Polish. In return, Yveltal performs well against the fast attackers that try to KO Primal Kyogre by taking advantage of its low Speed.
* Stealth Rock + Swords Dance variants of Primal Groudon can be effective as well, setting Stealth Rock against bulky teams while using Swords Dance-boosted Precipice Blades to heavily threatening threaten support Arceus formes that trouble this Yveltal set with Swords Dance-boosted Precipice Blades. (for a little more clarity) In return, Yveltal threatens Giratina, Lugia, and the fast attackers that can revenge kill Primal Groudon.
* Arceus-Water can play a more defensive role over than Primal Kyogre, having the bulk and recovery to better check Rock Polish Primal Groudon and Necrozma-DM while being a great option against Dragon Dance Mega Salamence, another threat that this Yveltal variant is likely to be slower than. Choice Scarf Yveltal can revenge kill the fast Psychic-type Pokemon such as Mewtwo, Deoxys-A, and Ultra Necrozma that threaten to take out Arceus-Water.
* Necrozma-DM offers much-needed help against Fairy-type Pokemon and can use Yveltal's U-turn to immediately pressure many of the enemy's opponent's Yveltal checks.
* Mega Gengar can trap and remove targets with the assistance of Yveltal's U-turn a U-turn pivot (optional, more about Yveltal) while threatening many bulky targets that take Yveltal's weaker attacks well.

[SET]
name: Stallbreaker
move 1: Dark Pulse / Foul Play
move 2: Toxic
move 3: Taunt
move 4: Roost
item: Dread Plate / Leftovers
ability: Dark Aura
nature: Timid
evs: 252 HP / 72 SpD / 184 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse on a stallbreaker set is rather weak in comparison to offensive sets, but it helps to chip wear down and break through targets more quickly. The flinch chance can also prevent Pokemon from standing up to Yveltal, as well. (just for repetition of "also") It also helps to have an immediate damage option against offensive Pokemon, as waiting for Toxic damage to rack up can be very risky or wouldn't be and isn't an available strategy against Poison- or Steel-type Pokemon.
* Foul Play is a viable alternative attack that takes advantage of the foe's Attack stat, dealing more damage to offensive Pokemon than Dark Pulse would without a boost, and it also lets Yveltal act as a defensive check to boosting attackers such as Extreme Killer Arceus and Primal Groudon. Using Foul Play means that Yveltal will have a harder time taking down defensive Pokemon such as Ferrothorn that don't mind the damage from it or Toxic will be harder to take down, however. (think this change is clearer due to the multiple clauses after "defensive Pokemon")
* Toxic is this set's main way to deal damage opponents and break through defensive targets. By outlasting the foe foes with Roost and preventing their own recovery options with Taunt, this Yveltal set can be very difficult for defensive Pokemon such as Blissey, Ferrothorn, support Arceus formes, and defensive Zygarde-C to handle.
* Taunt prevents foes from recovering, setting entry hazards, and using setup moves in an attempt to power through Yveltal, and setting entry hazards.
* Roost keeps Yveltal healthy and is a superior recovery option to Oblivion Wing for better longevity, ("superior option for better longevity" is a little repetitive) as this set aims to stay in battle against defensive Pokemon. Oblivion Wing needs high damage output to offer sufficient healing, which this variant of Yveltal lacks.

Set Details
========

* Maximum HP investment makes good use of Yveltal's high base HP stat, making it difficult to break for many defensive Pokemon and some offensive Pokemon. With the additional 72 Special Defense EVs, Yveltal is capable of avoiding the 4HKO from a support Arceus's Ice Beam if factoring in Leftovers recovery.
* 184 Speed EVs and a Timid nature ensure that Yveltal will outspeed positive-natured base 90 Speed Pokemon and many other defensive Pokemon in the tier, allowing for a fast Taunt or Toxic before they can act against Yveltal.
* Maximum Speed investment is an option to outspeed Lunala and Rayquaza.
* Dread Plate allows Dark Pulse to cleanly 2HKO Mega Sableye, improving Yveltal's matchup against very defensive teams at the cost of passive recovery.
* Leftovers provides passive recovery, which is helpful to negate weak attacks and Stealth Rock damage without forcing unnecessary Roost usage. As this set doesn't aim to be a check to specific Pokemon, Leftovers is ideal for sets (teams?) that want longevity.


Usage Tips
========

* Stallbreaker Yveltal aims to be a big annoyance to bulky teams, taking weak attacks and taking down defensive Pokemon via Toxic stalling or repeated use of Dark Pulse while limiting their options to fight back with Taunt. Common targets include most defensive Steel-types such as Ferrothorn and Celesteela, as well as support Arceus formes.
* This set should be spreading Toxic and using Taunt to prevent enemy Pokemon from using recovery moves or using utility options against Yveltal and its team.
* This variant can be less useful against offensive teams. Toxic stalling and weaker Dark Pulses can generally be ignored by most offensive Pokemon, but a fast Taunt or Foul Play can prevent them from taking too much advantage of Yveltal. It Yveltal is still bulky enough to stand up to attacks and badly poison threatening sweepers such as Calm Mind Arceus-Ground, (comma) and is capable of wearing down threats that the team can have trouble dealing with.
* A healthy Yveltal can stand unafraid of Magearna and aim to Taunt it to prevent Heal Bell. If Yveltal takes a Fleur Cannon for the trouble, it can Roost off the damage.
* When facing bulky teams, (comma) it should be ensured (just "ensure"?) that Yveltal is avoiding avoids excessive exposure to Toxic itself. This is a common move from defensive teams, and if Yveltal isn't correctly supported with a cleric, it will fall to Toxic damage before having a real impact. (could move this bullet point closer to the bullet point about bulky teams)
* Mega Sableye and Mega Diancie are annoying for this Yveltal variant, as Magic Bounce in particular (it seems to be the only factor that causes hesitation?) makes Yveltal hesitant to use Taunt or Toxic. Without Dread Plate, Mega Sableye can avoid the 2HKO from Dark Pulse as well, making it more frustrating to break past. Mega Diancie can take advantage of this set rather well (easily?) but is a rare sight.

Team Options
========

* Stallbreaker Yveltal sets are is (you mention "this set" later in the sentence, so it's probably best to be consistent) best suited to balance teams that can add with additional ("add additional" seems repetitive) bulky Pokemon and partners that can help this Yveltal set's matchup against offensive teams. This Yveltal variant adds provides ("adds ... for" seems wrong. alternatively, just replace "adds a good way to combat" with "combats") a good way to combat very defensive teams for balance teams that can struggle to break through them otherwise. Providing cleric support for Yveltal and playing around the potential enemy cleric is key to success.
* Primal Groudon's Swords Dance and Stealth Rock set is a great partner to apply pressure on (or "apply pressure to") defensive cores and check troublesome Fairy-types for Yveltal.
* Choice Scarf Xerneas stands out as an excellent partner that tackles many offensive Pokemon, threatens Mega Sableye, and provides key cleric and Defog support for this Yveltal set.
* Heal Bell Magearna is an alternative cleric that comes with better longevity while adding a check to the ability to check enemy Dark- and Fairy-type Pokemon.
* Spikes users such as Ferrothorn are excellent partners, as Yveltal can make great use of the switches it forces to rack up Spikes damage and stall out enemy Defog users.
* Z-Move or Life Orb Marshadow is a great revenge killer to help Yveltal against offensive teams and pressure defensive cores and Fairy-types together. This can come from Z-Move Marshadow or the Life Orb variant. (optional, less wordy?)
* Celesteela can help against offensive Arceus-Ground variants and Ultra Necrozma, two threats that this set can have trouble with.
* Calm Mind Arceus-Ground performs very well against offensive teams and can offensively check Swords Dance Primal Groudon and Necrozma-DM, which Yveltal can't reliably check.
* Mega Gengar can make use of Yveltal's status spreading to boost Hex and trap various threats (maybe provide examples?) much more easily.
* Arceus-Water is one of the better support Arceus formes on bulky teams, helping Yveltal against special Primal Groudon variants, offensive Ho-Oh, Necrozma-DM, and Mega Salamence.

[SET]
name: Choice Specs
move 1: Dark Pulse
move 2: Oblivion Wing
move 3: U-turn
move 4: Heat Wave
item: Choice Specs
ability: Dark Aura
nature: Timid
evs: 4 Def / 252 SpA / 252 Spe

[SET COMMENTS]
Moves
========

* Dark Pulse from a Choice Specs Yveltal is deadly to teams that lack strong (bulky?) Dark-resistant Pokemon, as it will pick picks up clean 2HKOs on Mega Diancie and maximum HP Arceus formes, a 3HKO against offensive Xerneas variants, and a 3HKO on Ho-Oh without worrying about Life Orb recoil damage.
* Oblivion Wing will 2HKOes offensive Xerneas and Primal Groudon, and the extra power from Choice Specs boosts Yveltal's own recovery, meaning this set tends to stick around longer, as Life Orb recoil isn't a concern. (optional structural change that cuts down on commas: delete this and change "extra power from Choice Specs" to "extra power and lack of recoil from Choice Specs")
* U-turn can let you avoid guessing games between Yveltal's STAB moves and scout for the opponent's switch-ins. U-turn can also have the advantage of disguising Yveltal's set, as both Choice item sets it commonly uses are very likely to have U-turn, adding a surprise factor when Yveltal reveals its damage output against various targets.
* Heat Wave is Yveltal's preferred coverage move on this set, targeting one of the best checks to Yveltal in Magearna for a clean 2HKO and doing high damage to Klefki. It will also OHKOes Ferrothorn and Mega Scizor, two Pokemon that can take Yveltal's other moves at least once.
* Focus Blast is Yveltal's best option against Tyranitar, OHKOing any set that lacks Chople Berry after Stealth Rock damage. (period) and Focus Blast also deals very high damage to Arceus-Dark while retaining higher damage against Magearna than Yveltal's STAB moves, at the cost of lowered accuracy.
* Hurricane is an alternative very strong attack that can fit into the third or fourth moveslot, dealing more damage than Dark Pulse against neutral targets and 2HKOing Arceus-Dark and Arceus-Fairy, but it comes with shaky accuracy.


Set Details
========

* With maximum Special Attack and Speed EVs backed up by Choice Specs and a Timid nature, Yveltal is able to outspeed the crowded Speed tier below it and output more damage than Life Orb sets, at the cost of locked attacks.
* A Modest nature can be considered for maximum wallbreaking power, increasing the odds of Oblivion Wing 2HKOing support Arceus formes after Stealth Rock damage and increasing the odds for Focus Blast to OHKO Fighing-weak Fighting-weak Arceus formes, while giving Dark Pulse even more power. (maybe list the downsides of using a Modest nature? what Speed benchmarks does Yveltal miss?)

Usage Tips
========

* Choice Specs Yveltal aims to be a wallbreaker, exchanging move flexibility for the freedom to run a Timid nature, stronger attacks, better longevity, and the ability to generate momentum with U-turn when compared to Life Orb sets.
* This Yveltal variant punishes opponents that use less with fewer strong checks to it, but against teams that employ strong Yveltal answers such as Arceus-Fairy, Magearna, and Tyranitar, it may be forced to use U-turn more often to avoid giving away momentum.
* Make use of the power given from by Choice Specs to break through teams that employ weaker checks to Yveltal such as Ho-Oh and support Arceus formes neutral to Dark Pulse. The lack of Life Orb recoil means that Recover stalling this Yveltal variant isn't an option for bulky teams.
* A well timed Heat Wave against teams using Magearna can open a playground for Yveltal to spam Dark Pulse and force the opponent to aggressively take Yveltal down with faster attackers or else risk losing crucial walls.
* Choice Specs-boosted Oblivion Wing can make Yveltal annoying to take down due to the amount of healing it can generate for itself. Common Pokemon do resist Yveltal's STAB attacks do have common resistances on teams, so be careful what Yveltal is locked into or things can backfire. (what's the connection between these two sentences? they seem like they could be separate points)
* If you are in doubt between choosing attacks, about the attack to choose, U-turn can be a safe play, provided Yveltal has teammates to take advantage of any momentum generated or have and a fallback if the opponent didn't doesn't switch out.

Team Options
========

* Choice Specs Yveltal focuses purely on wallbreaking and momentum generation. Balance and bulky offense team structures are able to utilize some defensive teammates to help cover for this set's main weaknesses, namely Fairy-types and faster attackers.
* Mega Gengar stands out as one of the best partners to Choice Specs Yveltal. It can trap and eliminate Arceus-Fairy and Xerneas, and can do so with greater ease with the help of Yveltal's U-turn. Yveltal's ability to switch into many attacks that trouble Mega Gengar lets it them pair well defensively, and the two can combine to form a formidable wallbreaking duo. An important trait that Mega Gengar brings is the ability to revenge kill Ultra Necrozma, something that which can be very threatening to balance teams. (make this change if you mean Ultra Necrozma is very threatening to balance teams. if you mean Mega Gengar's ability to revenge kill Ultra Necrozma is threatening to balance teams, "a capability that" could work)
* Mega Scizor can work alongside Yveltal to check Fairy-types and form a U-turn core that where each member can help each the other get into battle against their its ideal targets. Magearna can perform a similar role with Volt Switch.
* Defensive Zygarde-C can use Glare to slow down support Arceus formes so that this Yveltal variant can break through them, and it is also a good check to Primal Groudon, Necrozma-DM, and Ho-Oh.
* Primal Groudon always fits well with Yveltal, checking Fairy-types and Primal Kyogre while also bringing utility with Stealth Rock setting, additional wallbreaking, or sweeping potential based on the chosen set.
* Choice Scarf Xerneas is a great partner that (potentially removable) can act as a check to many offensive Pokemon to help make up for Yveltal's lack of Sucker Punch while also providing cleric support.
* Arceus-Water can be a key support Arceus forme to assist Yveltal against the likes of Ho-Oh, Mega Salamence, and special Primal Groudon variants.

[SET]
name: Defensive (Physically Defensive is how you refer to the set in Usage Tips and Team Options?)
move 1: Foul Play
move 2: Roost
move 3: Toxic / Taunt
move 4: Sucker Punch / Defog / Taunt
item: Charti Berry / Dread Plate
ability: Dark Aura
nature: Impish / Bold
evs: 252 HP / 176 Def / 80 Spe

[SET COMMENTS]
Moves
========

* Foul Play is Yveltal's main method of punishing physical attackers such as Primal Groudon, Necrozma-DM, and Ultra Necrozma, as they are liable to be OHKOed by this Yveltal set before breaking past it. Foul Play also does considerable damage to Primal Kyogre, offensive Ho-Oh, and Mega Salamence, as well as other foes that are weak to the attack.
* Roost keeps Yveltal healthy, (comma) which is very important to counteract Stealth Rock damage and keep Yveltal away from the KO range of many boosted attacks from the likes of Primal Groudon, Mega Salamence, and other physical attackers.
* Toxic can punish support Arceus formes and Xerneas, which otherwise switch into Yveltal's other moves easily.
* Sucker Punch can be a necessary evil (I don't think I understand why it's a necessary evil, why is it bad?) to quickly finish off foes that are weakened by Yveltal or its teammates. In situations where Yveltal is slower than foes such as Ultra Necrozma or Double Dance Necrozma-DM and is in the range of a boosted attack, Sucker Punch can make all the difference.
* Defog is a potential option, as Yveltal can contend with some entry hazard setters such as Primal Groudon, Skarmory, (comma) and Ferrothorn and remove any Spikes or Stealth Rock set against Yveltal's team successfully.
* Taunt is a viable option in the third or fourth moveslot, as it can combine well with any of Toxic, Sucker Punch, or Defog for various results. Taunt and Toxic can greatly annoy defensive walls, Taunt and Sucker Punch can limit the moves of foes foes' moves and allow Yveltal to better handle offensive Pokemon, while Taunt and Defog can prevent defensive Pokemon from using utility moves against Yveltal while it clears any set entry hazards.

Set Details
========

* 252 HP EVs and 180 Defense EVs give Yveltal maximum physical bulk with the Speed benchmark used, letting it take on many of the physical attackers in the tier. An Impish nature is preferred on sets with Sucker Punch to avoid harming its damage output, but a Bold nature works well on sets without it to reduce damage from opposing Foul Play and confusion damage.
* 80 Speed EVs ensure that Yveltal is faster than Adamant Necrozma-DM so that it can use Foul Play first before taking an attack.
* Charti Berry is a necessary evil (I don't think I understand this either, sorry. would just "necessary" work?) so that Yveltal isn't simply OHKOed by a boosted Stone Edge from the likes of Primal Groudon, Ultra Necrozma, and Swords Dance Arceus-Ground, especially if Stealth Rock damage is not avoidable.
* Dread Plate is a potential alternative that boosts the power of Foul Play to the point that it can OHKO boosted Extreme Killer Arceus and Mega Lucario from full HP, (comma, OHKO implies that the attack is from full HP) at the cost of fearing boosted Rock-type moves from the aforementioned physical attackers. Dread Plate also gives Sucker Punch a very helpful power boost, allowing giving Yveltal to have good odds to OHKO Ultra Necrozma after Stealth Rock damage.
* Leftovers can also be considered to help with passive recovery, but this leaves Yveltal prone to physical attackers with Rock-type coverage.

Usage Tips
========

* Physically defensive Yveltal is just as it sounds: a physical wall that aims to check numerous threatening physical attackers such as Primal Groudon, Mega Salamence, Ultra Necrozma, Marshadow, and Swords Dance Arceus-Ground.
* It should be noted that this Yveltal variant is far from a truly reliable answer to all physical attackers and acts more like a quick fix to a team's weaknesses than like a true physical wall. Yveltal's lack of resistances to many of the boosted attacks it will be taking means that any fight with one of these threats will be a very close call, and certain conditions such as Stealth Rock being up, an unexpected attack, or a lack of Charti Berry will can result in Yveltal getting destroyed by the attackers it would attempt attempts to check.
* Yveltal should ideally be kept healthy and should switch into these attackers immediately to attempt to deal with them. If Yveltal comes in too late or is too weakened, it can only aim for a surprise Sucker Punch before going down. The problem with this is that without scouting the sets of Pokemon like Ultra Necrozma, Primal Groudon, and Arceus-Ground, Yveltal may well be switching into an unfavorable matchup if they are specially offensive variants. Assess carefully.
* Sucker Punch can be a surprise to opponents that see a bulky and slower Yveltal, meaning that and switch in frail and faster attackers weak to Sucker Punch may try their luck. If Yveltal's full moveset isn't revealed, this Yveltal set can keep opponents on their toes.
* Spreading Toxic and using Taunt on slower Pokemon is still a viable way to get use out of this set. Yveltal's base Speed is higher than the majority of defensive Pokemon, and the bulk investment its bulk (Special Defense isn't invested in with the given spread, so I think this is more precise) means that taking weak attacks is easy.

Team Options
========

* Physically defensive Yveltal sets generally aren't generally isn't meant to be built around, as it isn't reliable enough in practice and has some key weaknesses depending on the item and move choices. This Yveltal variant adds additional security against physical attackers for to teams that find themselves weak vulnerable near the end of the teambuilding process. Teams that are using more creative builds can find themselves using physically defensive Yveltal to patch up obvious holes.
* Stealth Rock Primal Groudon sets offer solid checks to Fairy-types and Primal Kyogre, and the entry hazard punishes while setting the entry hazard to punish the switches this Yveltal variant will force from physical attackers. (lots of dependent clauses at the end of this sentence that I wanted to cut down on)
* Necrozma-DM is a capable teammate that fits as a specially defensive wall aimed to tackle support Arceus formes and set Stealth Rock.
* Ferrothorn can check most Fairy-types and set Spikes to punish the switches that Yveltal and its team forces.
* Arceus-Water and Arceus-Ground can both fit as a check to special Primal Groudon and Necrozma-DM. Charti Berry variants of this Yveltal set can handle Swords Dance Ultra Necrozma and Primal Groudon in return.
* Toxapex is a helpful partner to set Toxic Spikes, annoy Fairy-types, and be difficult to take down for defensive Pokemon that try to wall Yveltal.
* Choice Scarf Xerneas helps to keep Yveltal from getting overwhelmed by physical attackers such as Marshadow while providing Defog and Aromatherapy support.

[STRATEGY COMMENTS]
Other Options
=============

* A Choice Band set can pose a threat to bulky teams when combined with a trapper that can deal with support Arceus formes, but it can lack the flexibility of other sets. It also cannot fit a move that offers longevity ("recovery" might work better here) such as Roost or Oblivion Wing, meaning that it is a frailer frailer in practice when compared to every other Yveltal set.
* Flyinium Z is possible usable (or "Using Flyinium Z is possible") with Sky Attack on a physical set or with Hurricane on a special set, (remove comma) but lacks a real use that other sets can't already offer.
* Darkinium Z is also possible usable with one of Yveltal's many Dark-type STAB options but doesn't have a real purpose other than one strong attack against a target. The use of a Z-Moves are is far better utilized by other Pokemon that can pair with Yveltal, (comma) such as Necrozma-DM.
* Substitute can take advantage of Yveltal's ability to force switches, and with Disable, it can punish Pokemon that only have one ideal move to break Yveltal's Substitutes. This requires using up two of Yveltal's moveslots to accomplish, however, and there are better options to consider.

Checks and Counters
===================

**Fairy-types**: Arceus-Fairy stands out as the best answer to Yveltal, outspeeding it and taking all of its attacks while only fearing Toxic or a lucky Choice Specs Yveltal that has Hurricane. U-turn can also throw a wrench into the matchup, as Yveltal has many potential partners that can easily take advantage of an Arceus-Fairy such as Necrozma-DM and Mega Gengar. Xerneas is a common offensive check to Yveltal that can pivot into Dark Pulse and force Yveltal out while having the option Aromatherapy to deal with the potential Toxic poison Yveltal has spread with Aromatherapy, but it has to be careful about taking too much damage from an offensive set's Oblivion Wing. Magearna resists many of Yveltal's moves outside of Heat Wave and has the bulk to repeatedly switch in while also having the ability and Heal Bell to remove any status Yveltal has spread, but it can be taken advantage of with U-turn or worn down by repeated attacks. Mega Diancie resists both of Yveltal's STAB attacks, has Magic Bounce to mess with the utility options that various sets utilize, and generally outspeeds most sets, but it lacks the defensive stats to repeatedly stand up to offensive Yveltal's attacks.

**Rock-types**: Tyranitar and the rare Arceus-Rock make for good Yveltal checks. Tyranitar resists most of Yveltal's common attacks and takes little damage thanks to the Special Defense boost from sand, but it has to be wary of a rare Focus Blast or Yveltal using U-turn to pivot out of it. pivoting on it or a rare Focus Blast. Arceus-Rock is naturally faster than Yveltal and can strike it down with Judgment while healing off Dark Pulse damage with Recover, but can have it has the same fears as Tyranitar.

**Arceus-Dark**: Arceus-Dark's ability to outspeed Yveltal and avoid the 2HKO from all of Yveltal's standard attacks makes it a reasonable check, as it can retaliate with Ice Beam or cripple Yveltal with Toxic. Yveltal is capable of winning based on in various conditions, however. The Life Orb set can use a combination of Oblivion Wing, Taunt, and Toxic to break through Arceus-Dark's healing and win a fight. Choiced Choice item sets are able to use U-turn to pivot off of Arceus-Dark into a suitable teammate and eventually wear it down. Stallbreaker and physically defensive sets only fear Arceus-Dark's higher Speed, which can lead to it using Toxic on Yveltal before it can do the same to try and stall Arceus-Dark out.

**Ho-Oh**: Ho-Oh is sufficiently bulky enough to take Yveltal's special attacks and try to badly poison Yveltal before pivoting out and recovering damage with Regenerator. Ho-Oh can also Recover stall with Recover until Yveltal weakens itself with Life Orb recoil, but this comes with the risk of a Dark Pulse flinch. Knock Off variants of Life Orb Yveltal can also deal a lot of damage to Ho-Oh, potentially 2HKOing it if it switches into Dark Pulse. Foul Play will also deal considerable damage to offensive Ho-Oh sets. Stealth Rock being up can massively limit Ho-Oh's ability to check Yveltal as well.

**Faster Attackers**: Pokemon with a higher base Speed than Yveltal such as Mega Salamence, Mega Lucario, Ultra Necrozma, Mewtwo, and Deoxys-A are capable of dealing enough damage to take Yveltal out. These Pokemon have to be very careful, however, as Yveltal is capable of taking a single hit from the majority of them and retaliating with a strong attack. (or similar) There is also the potential of Sucker Punch from the Life Orb and physically defensive sets, and these faster attackers are also ideal targets of the Choice Scarf set, which will reverses the matchup.

**Support Arceus Formes**: Maximum HP Arceus formes neutral to Dark Pulse such as Arceus-Ground and Arceus-Water are able to switch into Life Orb Yveltal and Recover stall with Recover until Life Orb recoil wears Yveltal down into the KO range of an attack such as Ice Beam. Taunt variants of Life Orb Yveltal are able to trade blows with these support Arceus formes and potentially win a duel, but they will come out severely damaged. Choice Specs Yveltal can easily overpower these support Arceus formes. Choice Scarf Yveltal has the ability to pivot out with U-turn to a better-suited teammate, but its attacks will struggle to break through a support Arceus forme. Stallbreaker and physically defensive Yveltal variants will only be annoyed if they are badly poisoned by Toxic first but will still stall out these support Arceus formes either way.

**Blissey and Chansey**: Blissey and Chansey have the bulk to handle Yveltal's special attacks with ease, but they are only effective checks to Choice item variants, and Yveltal can still use U-turn on these sets to avoid these Pokemon. Taunt variants of Yveltal will easily shut down any attempts that Blissey and Chansey make to check it, and Taunt is commonly seen on any variant that isn't holding Choice Scarf or Choice Specs.

**Electric- and Ice-types**: Dedicated Electric- and Ice-type attackers are very rare in Ubers but make good offensive checks to Yveltal regardless. The likes of Tapu Koko, Zekrom, and Kyurem-W are more than capable of OHKOing Yveltal if given the chance, but they can struggle to switch in safely.

**Mega Sableye**: While Mega Sableye cannot stand up to offensive Yveltal's attacks, it will takes Foul Play with ease, and Magic Bounce can make Yveltal paranoid about discourage using utility moves such as Taunt and Toxic, making it more difficult to break through defensive teams. A well timed bounce can force stallbreaker and physically defensive Yveltal variants to switch, as it will therefore they struggle to effectively break through other Yveltal checks such as support Arceus formes and Blissey without access to Taunt.

**Status**: Toxic poison and Paralysis paralysis can be very crippling to Yveltal, with higher effectiveness depending on the set. Defensive and stallbreaker sets will hate getting badly poisoned, while paralysis will affects Yveltal's offensive abilities. Burns are also annoying to Foul Play Yveltal variants, as it will halve the damage of Foul Play and make it much more difficult to use it against enemy Pokemon effectively.
 
cheers for the check! assuming the stuff below isn't an issue i'll upload this tomorrow.

re: 1st line of lo set details - +spa is the default nature so i went with that wording and decided to leave it. the importance in nature is defense lowering but +spa is still optimal there

re: dark pulse usage tip (lo) - the implication is that the team can be too weak to take on a boosted sweeper. if geoxern sets up at full or for free on a forced switch and the checks are low, the game is over. that means yveltal has to stay in and taunt it = it cant switch out. i made that change for clarity.

re: xern in team options (lo) - i just mean that yveltal chips mag and offensively checks pdon + dusk for geoxern. i don't think either wording change makes it sound ideal.

re: u-turn in moves (scarf) - idk how else to word this. yveltal forces a mon out and u-turns instead of clicking the move that damages the opponent (because they are switching out) so the edit i made is the best i can do.

re: mega gengar in team options (stallbreaker) - i put various because it applies to basically anything statused and weakened. there are no specific examples that stand out enough to be worth noting.

re: specs set details - i prefer to avoid putting in extra lines past the 2nd gp so i left that as it is for safety

re: sucker punch in phys def moves - its a necessary evil because without it the faster mons weak to it might have the right move to kill yveltal, going against the purpose of the set. rather than gamble on their coverage or being healthy, sucker can just take them out. the second line goes over that.

the same applies to charti berry - the reasoning is mentioned to explain that. the wording is supposed to convey that the set in general is not the most optimal strategy but we do recognize it as a potential option, assuming the reader is educated behind the drawbacks it has so that they can work around it. if its still an issue i can see about changing it.

re: sucker punch usage tip (phys def) - i don't think thats a good change to make. these mons aren't going to switch into yveltal realistically. the situation described is like a +2 ultra going for the KO instead of fearing a sucker punch, so it would need to be +2 first and see that yveltal is slow and may not have it, hence trying their luck. i made a slight edit but adding that they will switch isn't gonna work.

cheers again!
 

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