vs Marowak-A
252+ Atk Thick Club Marowak-Alola Bonemerang (2 hits) vs. 252 HP / 252 Def Malaconda: 92-110 (21.1 - 25.3%) -- approx. 0% chance to 4HKO
+2 252+ Atk Thick Club Marowak-Alola Bonemerang (2 hits) vs. 252 HP / 252 Def Malaconda: 186-218 (42.8 - 50.2%) -- approx. 0.4% chance to 2HKO
252+ Atk Thick Club Marowak-Alola Fire Punch vs. +2 252 HP / 252 Def Malaconda: 210-248 (48.3 - 57.1%) -- 92.6% chance to 2HKO
+2 252+ Atk Thick Club Marowak-Alola Fire Punch vs. +2 252 HP / 252 Def Malaconda: 420-494 (96.7 - 113.8%) -- 81.3% chance to OHKO
252+ Atk Marowak-Alola Fire Punch vs. +2 252 HP / 252 Def Malaconda: 104-126 (23.9 - 29%) -- 98.5% chance to 4HKO
+2 252+ Atk Marowak-Alola Fire Punch vs. +2 252 HP / 252 Def Malaconda: 210-248 (48.3 - 57.1%) -- 92.6% chance to 2HKO
252+ Atk Thick Club Marowak-Alola Flare Blitz vs. +2 252 HP / 252 Def Malaconda: 336-396 (77.4 - 91.2%) -- guaranteed 2HKO
+2 252+ Atk Thick Club Marowak-Alola Flare Blitz vs. +2 252 HP / 252 Def Malaconda: 668-788 (153.9 - 181.5%) -- guaranteed OHKO
252+ Atk Marowak-Alola Flare Blitz vs. +2 252 HP / 252 Def Malaconda: 168-200 (38.7 - 46%) -- guaranteed 3HKO
+2 252+ Atk Marowak-Alola Flare Blitz vs. +2 252 HP / 252 Def Malaconda: 336-396 (77.4 - 91.2%) -- guaranteed 2HKO
4 Atk Malaconda Knock Off (97.5 BP) vs. 0 HP / 0 Def Marowak-Alola: 194-230 (74.3 - 88.1%) -- guaranteed 2HKO
4 Atk Malaconda Knock Off vs. 0 HP / 0 Def Marowak-Alola: 132-156 (50.5 - 59.7%) -- guaranteed 2HKO
Lots of Maths for this, because Knock-Off. Essentially, Marowak-A would always win before, because Fire Punch/Flare Blitz and the speed investment would allow it to kill, but Stamina allows a switch into a Bonemerang for a +2 defence (and Bonemerang's second hit is vs +1 Def). If Mar-A has a SD up, then it outspeeds and kills with Fire Punch; Flare Blitz will likely kill it without the help of Swords Dance, but a couple of low roles and leftovers will keep it alive, allowing a Synthesis, but that means it still has the Thick Club. If it doesn't then it's going to eat a Knock Off, which will 2HKO. That said, a Flare Blitz Mar-A would typically be outsped, and would need 152 Spe to get the drop, which gives a rather meh array of 104 HP/252 Atk/152 Spe.
vs Tyranitar Mega
+1 252 Atk Tyranitar-Mega Superpower vs. +2 252 HP / 252 Def Malaconda: 252-298 (58 - 68.6%) -- guaranteed 2HKO after sandstorm damage
252 Atk Tyranitar-Mega Superpower vs. +3 252 HP / 252 Def Malaconda: 136-160 (31.3 - 36.8%) -- guaranteed 3HKO after sandstorm damage
4 Atk Malaconda Power Whip vs. 0 HP / 4 Def Tyranitar-Mega: 182-216 (53.3 - 63.3%) -- guaranteed 2HKO
4 Atk Malaconda Knock Off vs. 0 HP / 4 Def Tyranitar-Mega: 25-30 (7.3 - 8.7%) -- possibly the worst move ever
vs Tyranitar
252+ Atk Choice Band Tyranitar Superpower vs. +2 252 HP / 252 Def Malaconda: 238-282 (54.8 - 64.9%) -- guaranteed 2HKO after sandstorm damage
-1 252+ Atk Choice Band Tyranitar Superpower vs. +3 252 HP / 252 Def Malaconda: 128-152 (29.4 - 35%) -- guaranteed 3HKO after sandstorm damage
(96.7 Min, after 2 Turns of sand, Mutual Kill); Switching into +2 Mala, +2, doesn't Knock Off
252+ Atk Tyranitar Superpower vs. +2 252 HP / 252 Def Malaconda: 158-188 (36.4 - 43.3%) -- guaranteed 3HKO after sandstorm damage
-1 252+ Atk Tyranitar Superpower vs. +3 252 HP / 252 Def Malaconda: 86-102 (19.8 - 23.5%) -- 98.3% chance to 4HKO after sandstorm damage
-2 252+ Atk Tyranitar Superpower vs. +4 252 HP / 252 Def Malaconda: 54-64 (12.4 - 14.7%) -- guaranteed 6HKO after sandstorm damage
(87.35 Min, 100.25 Max, after 3 Turns of sand; Malaconda wins, on average would survive the Sandstorm); Switching into +2 Mala, using Knock Off
252+ Atk Tyranitar Superpower vs. +1 252 HP / 252 Def Malaconda: 212-250 (48.8 - 57.6%) -- guaranteed 2HKO after sandstorm damage
-1 252+ Atk Tyranitar Superpower vs. +2 252 HP / 252 Def Malaconda: 106-126 (24.4 - 29%) -- guaranteed 4HKO after sandstorm damage
(85.7 Min, 99.1 Max, after 2 Turns of sand; 40% Chance Mutual Kill); Switching into +2 Mala, using Knock Off
-1 252+ Atk Choice Band Tyranitar Superpower vs. 252 HP / 252 Def Malaconda: 316-374 (72.8 - 86.1%) -- guaranteed 2HKO after sandstorm damage
-2 252+ Atk Choice Band Tyranitar Superpower vs. +1 252 HP / 252 Def Malaconda: 158-188 (36.4 - 43.3%) -- guaranteed 3HKO after sandstorm damage
-2 252+ Atk Tyranitar Superpower vs. +1 252 HP / 252 Def Malaconda: 106-126 (24.4 - 29%) -- guaranteed 4HKO after sandstorm damage
(103.45 Min, after 1 Turn of sand; TTar wins); Mala switching into -1 Superpower
-2 252+ Atk Choice Band Tyranitar Superpower vs. 252 HP / 252 Def Malaconda: 238-280 (54.8 - 64.5%) -- guaranteed 2HKO after sandstorm damage
-3 252+ Atk Choice Band Tyranitar Superpower vs. +1 252 HP / 252 Def Malaconda: 128-152 (29.4 - 35%) -- guaranteed 3HKO after sandstorm damage
-3 252+ Atk Tyranitar Superpower vs. +1 252 HP / 252 Def Malaconda: 86-102 (19.8 - 23.5%) -- 98.3% chance to 4HKO after sandstorm damage
-4 252+ Atk Choice Band Tyranitar Superpower vs. +2 252 HP / 252 Def Malaconda: 80-96 (18.4 - 22.1%) -- 45.9% chance to 4HKO after sandstorm damage
(105.5 Min, after 2 Turns of sand, if Mala Knock Offs 1st; TTar Wins // 96.7 after 2 turns of Sand, if Mala Power Whips first); Mala free switching into -2 Superpower
4 Atk Malaconda Knock Off (97.5 BP) vs. 4 HP / 0 Def Tyranitar: 48-57 (14 - 16.6%) -- possible 6HKO
4 Atk Malaconda Power Whip vs. 4 HP / 0 Def Tyranitar: 240-284 (70.1 - 83%) -- guaranteed 2HKO
-2 252+ Atk Choice Band Tyranitar Superpower vs. 252 HP / 252 Def Malaconda: 238-280 (54.8 - 64.5%) -- guaranteed 2HKO after sandstorm damage
-3 252+ Atk Tyranitar Superpower vs. 252 HP / 252 Def Malaconda: 128-152 (29.4 - 35%) -- guaranteed 3HKO after sandstorm damage
Both forms outspeed, but both get 2HKO by Power Whip, which makes sense - physical STAB vs SE. That said, Mega TTar can swap into a Knock Off, take very little damage, and get off a Dragon Dance, eat a Whip and is 2HKO if there are no Leftovers. Standard TT is obviously less lucky - it doesn't get chance to DDance up, cannot switch into a Knock Off without sacrificing its damage, Glare without going secnod and eating 2*Whips (only 28% chance of missing at least one), and obviously a Power Whip means that it would die to the second after its first attack. Thus, Banded TTar is checked slightly by Mala. While Mala would normally have lost this one, it seems a bit rough on Mala such a defensive mon, that short of switching into Banded TTar at -2, it wouldn't be able to do anything. The way Mala wins, it would need to already be slightly set up against Banded TTar, or have a free switch while TTar is already making SP's at -2, which is not likely when confronted by a 2HKO from Power Whip.
vs Ferrothorn, Malaconda already wins. However, if Mala isn't running Rapid Spin, that's 3 layers of spikes
4 Atk Malaconda Knock Off (97.5 BP) vs. 252 HP / 88+ Def Ferrothorn: 70-84 (19.8 - 23.8%) -- possible 6HKO after Leftovers recovery
4 Atk Malaconda Knock Off vs. 252 HP / 88+ Def Ferrothorn: 48-57 (13.6 - 16.1%) -- possible 7HKO
0 Atk Ferrothorn Power Whip vs. 252 HP / 252 Def Malaconda: 66-78 (15.2 - 17.9%) -- possible 6HKO
0 Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Malaconda: 93-109 (21.4 - 25.1%) -- 0% chance to 4HKO
Currently, Malaconda deals ~15.3% damage/turn, but Ferrothorn deals 16.5% in raw damage AND a further 12.5% in Iron Barbs; It takes 7 attacks to kill Ferrothorn, so the damage looks a bit like (no Berry/Residual healing); Maths is going to be slightly off, but mostly correct, working from averages.
Turn 1; Ferro HP (78.2%) // Mala (71%)
Turn 2; Ferro HP (62.9%) // Mala (42%)
Turn 3; Ferro HP (47.6%) // Mala (13%)
Turn 4; Ferro HP (47.6%) // Mala (46.5%) Synthesis
Turn 5; Ferro HP (32.3%) // Mala (17.5%)
Turn 6; Ferro HP (32.3%) // Mala (41%) Synthesis
Turn 7; Ferro HP (17%) // Mala (12%)
Turn 8; Ferro HP (17%) // Mala (43.5%) Synthesis; Past here, it's struggle cuddle time
The difference with Stamina is that Mala takes steadily less each round, but provided Mala has at least 4 Synthesis left, it would win. Using the current "special wall" which relies on Harvest, without Perma-sun, and obviously lower Defense, Mala would suffer a bit more (taking an additional 7% of damage a turn, which could see him dead from the high rolls on Turn 3. A set using Synthesis however could obviously outstall, and having sun up for some of the time would make it even more worthwhile for Mala The danger with the Stamina case is that Ferrothorn just keeps stacking defensive buffs, and should instead just throw out as many spikes as possible before forcing a switch.
vs Pelipper
4 Atk Malaconda Power Whip vs. 248 HP / 196+ Def Pelipper: 99-117 (30.6 - 36.2%) -- 46.9% chance to 3HKO
0 SpA Pelipper Hurricane vs. 252 HP / 0+ SpD Malaconda: 168-198 (38.7 - 45.6%) -- guaranteed 3HKO
0- Atk Pelipper U-turn vs. 252 HP / 0 Def Malaconda: 156-188 (35.9 - 43.3%) -- guaranteed 3HKO
0- Atk Pelipper U-turn vs. +2 252 HP / 0 Def Malaconda: 80-96 (18.4 - 22.1%) -- possible 5HKO
As you can see, not only can Pelipper 3HKO with 100% Accurate Hurricane, outspeeding Malaconda, but has a decent chance of surviving being 3HKO'd, but the rain prevents proper healing - only 25%, so Synthesis cannot be spammed as much as it would want.
vs Weavile
252 Atk Life Orb Weavile Icicle Crash vs. +2 252 HP / 252 Def Malaconda: 187-221 (43 - 50.9%) -- 3.1% chance to 2HKO
252 Atk Life Orb Weavile Icicle Crash vs. +3 252 HP / 252 Def Malaconda: 151-179 (34.7 - 41.2%) -- guaranteed 3HKO
4 Atk Malaconda Power Whip vs. 0 HP / 0 Def Weavile: 184-217 (65.4 - 77.2%) -- guaranteed 2HKO
This may seem obvious, but just wanted to say the Weavile can still revenge kill a +2, with a minimum 77.7 against a stacked up Malaconda, especially so if there's Hail available up, and you can come in with Pressure.
vs Gyrados
+1 252 Atk Gyarados Bounce vs. 252 HP / 252 Def Malaconda: 438-516 (100.9 - 118.8%) -- guaranteed OHKO
252 Atk Gyarados Supersonic Skystrike (160 BP) vs. +1 252 HP / 252 Def Malaconda: 368-434 (84.7 - 100%) -- 6.3% chance to OHKO
+1 164 Atk Gyarados Bounce vs. 252 HP / 252 Def Malaconda: 408-482 (94 - 111%) -- 62.5% chance to OHKO
-1 4 Atk Malaconda Power Whip vs. 88 HP / 4 Def Gyarados: 105-124 (29.7 - 35.1%) -- guaranteed 4HKO after Leftovers recovery
After a moxie boost, Bounce is a OHKO, while a Z-Bounce can revenge kill. On a bulkier Sub DD set, Bounce has a 5/8 chance of gibbing Mala, while a +2 can OHKO
vs Hoopa-U
252 Atk Choice Band Hoopa-Unbound Gunk Shot vs. +1 252 HP / 252 Def Malaconda: 328-388 (75.5 - 89.4%) -- guaranteed 2HKO
252 Atk Choice Band Hoopa-Unbound Gunk Shot vs. +2 252 HP / 252 Def Malaconda: 248-292 (57.1 - 67.2%) -- guaranteed 2HKO
252 Atk Choice Band Hoopa-Unbound Drain Punch vs. +1 252 HP / 252 Def Malaconda: 206-244 (47.4 - 56.2%) -- 83.2% chance to 2HKO
252 Atk Choice Band Hoopa-Unbound Drain Punch vs. +2 252 HP / 252 Def Malaconda: 156-184 (35.9 - 42.3%) -- guaranteed 3HKO
252 Atk Choice Band Hoopa-Unbound Drain Punch vs. +3 252 HP / 252 Def Malaconda: 124-148 (28.5 - 34.1%) -- 1.8% chance to 3HKO
4 Atk Malaconda U-turn vs. 0 HP / 0 Def Hoopa-Unbound: 308-364 (102.3 - 120.9%) -- guaranteed OHKO
4 Atk Malaconda Power Whip vs. 0 HP / 0 Def Hoopa-Unbound: 196-232 (65.1 - 77%) -- guaranteed 2HKO
As you can see, a Malaconda can take a hit from Hoopa-U and U-Turn kill - but given 4MSS, it would have to be a dedicated Hoopa U/Malaconda killer, and as stated above, there are certainly better options. Buzzwole, for one.
vs Tapu Bulu
+1 252 Atk Tapu Bulu Superpower vs. 252 HP / 252 Def Malaconda: 422-498 (97.2 - 114.7%) -- 81.3% chance to OHKO
252 Atk Tapu Bulu Superpower vs. 252 HP / 252 Def Malaconda: 282-334 (64.9 - 76.9%) -- guaranteed 2HKO after Grassy Terrain recovery
252 Atk Tapu Bulu Superpower vs. +1 252 HP / 252 Def Malaconda: 190-224 (43.7 - 51.6%) -- guaranteed 3HKO after Grassy Terrain recovery
252 Atk Tapu Bulu Superpower vs. +2 252 HP / 252 Def Malaconda: 142-168 (32.7 - 38.7%) -- 4.5% chance to 3HKO after Grassy Terrain recovery
252 Atk Tapu Bulu Superpower vs. +3 252 HP / 252 Def Malaconda: 114-136 (26.2 - 31.3%) -- 11% chance to 4HKO after Grassy Terrain recovery
4 Atk Malaconda Power Whip vs. 0 HP / 4 Def Tapu Bulu in Grassy Terrain: 86-102 (30.6 - 36.2%) -- guaranteed 4HKO after Grassy Terrain recovery
It takes a +4 or better Malaconda to be able to resist Bulu, and Bulu has SD; it doesn't need to attack even, although that leaves it potential Glare bait.
vs Dragonite
252+ Atk Dragonite Supersonic Skystrike (175 BP) vs. 252 HP / 252 Def Malaconda: 692-816 (159.4 - 188%) -- guaranteed OHKO
252+ Atk Dragonite Supersonic Skystrike (175 BP) vs. +1 252 HP / 252 Def Malaconda: 462-546 (106.4 - 125.8%) -- guaranteed OHKO
252+ Atk Dragonite Supersonic Skystrike (175 BP) vs. +2 252 HP / 252 Def Malaconda: 348-410 (80.1 - 94.4%) -- guaranteed 2HKO
252+ Atk Dragonite Supersonic Skystrike (175 BP) vs. +3 252 HP / 252 Def Malaconda: 278-330 (64 - 76%) -- guaranteed 2HKO
252+ Atk Dragonite Fire Punch vs. 252 HP / 252 Def Malaconda: 198-234 (45.6 - 53.9%) -- 44.1% chance to 2HKO
252+ Atk Dragonite Fire Punch vs. +1 252 HP / 252 Def Malaconda: 134-158 (30.8 - 36.4%) -- 57.9% chance to 3HKO
252+ Atk Dragonite Fire Punch vs. +2 252 HP / 252 Def Malaconda: 100-118 (23 - 27.1%) -- 49.8% chance to 4HKO
252+ Atk Dragonite Fire Punch vs. +3 252 HP / 252 Def Malaconda: 80-96 (18.4 - 22.1%) -- possible 5HKO
4 Atk Malaconda Knock Off vs. 0 HP / 4 Def Multiscale Dragonite: 37-44 (11.4 - 13.6%) -- possible 8HKO
4 Atk Malaconda Knock Off vs. 0 HP / 4 Def Dragonite: 75-88 (23.2 - 27.2%) -- 55.9% chance to 4HKO
Dnite pretty much has this in the bag. It's a 5HKO.
vs Mamoswine
4 Atk Malaconda Power Whip vs. 0 HP / 0 Def Mamoswine: 312-368 (86.4 - 101.9%) -- 12.5% chance to OHKO
240 Atk Life Orb Mamoswine Icicle Crash vs. 252 HP / 252 Def Malaconda: 390-460 (89.8 - 105.9%) -- 37.5% chance to OHKO
240 Atk Life Orb Mamoswine Icicle Crash vs. +1 252 HP / 252 Def Malaconda: 260-307 (59.9 - 70.7%) -- guaranteed 2HKO
240 Atk Life Orb Mamoswine Icicle Crash vs. +2 252 HP / 252 Def Malaconda: 198-234 (45.6 - 53.9%) -- 37.9% chance to 2HKO
240 Atk Life Orb Mamoswine Icicle Crash vs. 252 HP / 0 Def Malaconda: 541-640 (124.6 - 147.4%) -- guaranteed OHKO
With the current set up, it would be a OHKO, but with a more defensive Mala at +0, Mamo would have a slightly lesser chance to OHKO in return. However, with a +1 up, Mala would resist it have a chance to OHKO, but get killed by the second attack. It's not until +3 when it becomes a bit off for Mamoswine, when it cannot flat 2HKO.
vs Arghonaut
4 Atk Malaconda Power Whip vs. 252 HP / 0 Def Arghonaut: 270-320 (65.2 - 77.2%) -- guaranteed 2HKO after Leftovers recovery
4 Atk Malaconda Power Whip vs. +1 252 HP / 0 Def Arghonaut: 182-216 (43.9 - 52.1%) -- guaranteed 3HKO after Leftovers recovery
+1 252+ Atk Unaware Arghonaut Drain Punch vs. 252 HP / 252 Def Malaconda: 390-458 (89.8 - 105.5%) -- 37.5% chance to OHKO
+1 252+ Atk Unaware Arghonaut Gunk Shot vs. 252 HP / 252 Def Malaconda: 412-486 (94.9 - 111.9%) -- 68.8% chance to OHKO
It don't matter how tough ye be, Pirate Squid will have ye guts for garters.