Have a Glance:
This team's goal is to pave the most easiest path possible for mega gyarados to sweep, as it's quite difficult for mega Dos to sweep from the get-go without enough support to take out a number of threats that trouble the Dos. The team members are here in hopes of check/wall the most prominent mons in OU such as fairies(clefable, mega mawile, azumarill, mega gardy), zard x/y, mega venusaur, etc.
Main Sweeper:
Gyarados @ Gyaradosite
Adamant 80Hp 252Atk 176Spe
Intimidate/Mold Breaker
~Waterfall
~Dragon Dance
~Ice Fang
~Earthquake
My main sweeper and what the team is centered around: a very interesting mon indeed with a type change when mega evolved, which can be used to your advantage. In battle, it has little to no opportunities to stay in, set up and cause damage when there are way too many mons to threaten him out of the field such azumarill, mega mawile, thundy-I, ferro, conk, rotom - W, etc. while mega evolved. As you can see there are so many mons that makes mega Dos' job very difficult to do work. That is reason why it's crucial to have my other teammates healthy to take out mega Dos' threats for it to have an easier time staying in and setting up. There are some instances where mega Dos can freely setup, for example on a free switch-in on bisharp, where none of its STABs will be enough and is forced to switch out, giving mega Dos a free turn to DD. I decided to add a little bit of HP invested for enough bulk to take hits and DD is more than enough to outspeed most threats with no scarf. Lastly, there are times where gyarados cannot mega evolve if scizor, conk is present or when there are opposing fairies to deal with.
Bulky Defogger:
Latias @ Life Orb
Calm 72Hp 184Sp.Atk 252Spe
Levitate
~Psyshock
~Draco Meteor
~Recover
~Defog
With two of my mons weak to Stealth Rock, a reliable, bulky and a bit offensive defogger was needed on the team. Psyshock is for the popular wall in OU that is mega venusaur, which is easily going to wall the majority of my team if I risk losing Latias at any time mega Venusaur is still alive. She's also used as an additional check to zard Y resisting air slashes and living fire blasts for a 3HKO with 72Hp evs and calm nature. She is also a nice check to Rotom-Ws eating up Hydropumps and become status fodder against willo-wisp. Recover is needed for longetivity for more chances to defog if their hazard is still alive and racking up damage from life orb. When Latias has to defog, it is a nice way to lure in bisharp when coming for a defiant boost, switching in to mega or regular Dos for a free DD on bisharp.
Crippler/Special Attacker:
Thundurus - Incarnate @ Life Orb
Timid 4Hp 252Sp.Atk 252Spe
Prankster
~Thunderbolt
~Focus Blast
~Thunder Wave
~Hidden Power Ice
I, for some reason felt like I needed a mon that is high in the speed tier seeing how relatively slow my team is for some priority support; Thundurus-I pretty much fits this bill nicely. It's able to instantly cripple anything that is a problem to my team such as the zards, Mega pinsir, mega Gardy, non-scarfed Latios, etc. Once crippled my teammates are able to have the upper hand in dealing with these threats so mega Dos in turn has a easier time cleaning up house mid to late game. HP ice is here for those who are immune to T-wave like gliscor and lando-T. If Mega Pinsir is on the field, Thundy is a somewhat good check to it, threatening it out with t-bolt or nailing any switchin with the much needed paralysis. All in all, thundy's main role is to provide extra coverage and fire off prankster T-waves without any other mon outspeeding it with priority.
Specially Defensive Tank:
Hippowdon @ Leftovers
Careful 252Hp 252Sp.Def 4Def
Sand Stream
~Earthquake
~Stealth Rock
~Slack Off
~Whirlwind
The team's dedicated special wall, Stealth Rocker and Phazer. It's role is to eat up attacks from the special side that cannot be handled by other members of the team. Specifically, it's used to switch in on Zard Y activitating sandstorm to stop first turn solar beam directed at gyarados. With everything invested in all Sp. Def, any special attacker won't be able to dent this hippo at all, especially when it has slackoff to shrug the damage off. Hippo is also able to phaze out potential mons that want to setup a sweep against the team. This hippo is much to needed to stay alive when special threats are still present. If hippodown ever falls when a special attacker is still alive, the team will have a difficult time dealing with said threats.
Offensive Tank:
Clefable @ Life Orb
Modest 244Hp 252Sp.Atk 12Spe
Magic Guard
~Thunder Wave
~Softboiled
~Flamethrower
~Moonblast
I've been trying out this set of an offensive clefable, and feels like a very important glue to the team, giving off a bunch of defensive coverage all around and very important to keep alive every game. Even without any sort of defense invested, it still takes various amount of hits very well and deals back decent amount of damage (fox example, it can take a scald/ice beam without being 2HKO'd and T-wave after). Clefable is the only safe switch in to the most common conkeldurr set and instantly threatening out with moonblast. I put in T-wave on clefable because many offensive mons like char X, T-flame, Mega Pinsir etc. tend to switch in on clefable. Therefore, they get caught off guard by the paralysis. Flamethrower is there to nail opposing steel types in the face when trying to switchin on clefable with max special attack.
General Physical Attacker:
Aegislash @ Leftovers
Adamant 252Hp 252Atk 4Sp. Def
Stance Change
~Iron Head
~Sacred Sword
~King's Shield
~Shadow Sneak
Even with a few checks to fairies, I still felt acquiring a nice, solid stop to fairies would greatly benefit the team. An additional physical attacker to help dent opposing mons and potentially lowering the attack of physical mons' is pretty helpful. A reliable priority attack is pretty useful as well to finish severely weakened foes that are paralyzed is great as well. The reason for iron head is like I said to crush fairies and to bypass specifically clefable's calm mind, since usually fairies generally are mostly bulky on their special defensive side. The obligatory sacred sword for extra coverage overall.
