Regice @ Fightinium Z
Ability: Clear Body
EVs: 252 SpA / 4 SpD / 252 Spe
IVs: 0 Atk
- Rock Polish
- Ice Beam
- Focus Blast
This is a check as it can come in on abomasnow with the ability to revenge, kill or set up on it.
4 Atk Life Orb Abomasnow Earthquake vs. 0 HP / 4 Def Regice: 88-104 (29.2 - 34.5%) -- 5.9% chance to 3HKO
252+ SpA Regice Ice Beam vs. 0 HP / 0 SpD Abomasnow: 154-183 (47.9 - 57%) -- guaranteed 2HKO after Stealth Rock
252+ SpA Regice Focus Blast vs. 0 HP / 0 SpD Abomasnow: 274-324 (85.3 - 100.9%) -- guaranteed OHKO after Stealth Rock
None of Abomasnow's attacks come close to a OHKO, while Hurricane always OHKOes Abomasnow. Only a check, as Blizzard can 2HKO or even OHKO if Stealth Rock is up.
252 SpA Life Orb Abomasnow Blizzard vs. 0 HP / 4 SpD Articuno: 153-181 (47.6 - 56.3%) -- 28.9% chance to 2HKO after Leftovers recovery
252 SpA Life Orb Abomasnow Blizzard vs. 0 HP / 4 SpD Articuno: 153-181 (47.6 - 56.3%) -- 68.8% chance to OHKO after Stealth Rock
252 SpA Articuno Hurricane vs. 0 HP / 0 SpD Abomasnow: 332-392 (103.4 - 122.1%) -- guaranteed OHKO
Counter: (still slightly unsure about this but w/e)
Eelektross @ Assault Vest
EVs: 252 HP / 4 Atk / 252 SpA
- Volt Switch
- Giga Drain
- Knock Off
Blizzard's only a 3HKO without Rocks damage, and doesn't even have a solid chance to 2HKO with them up. Meanwhile, it gets OHKOd by Flamethrower.
252 SpA Life Orb Abomasnow Blizzard vs. 252 HP / 4 SpD Assault Vest Eelektross: 148-175 (39.5 - 46.7%) -- guaranteed 3HKO
252 SpA Life Orb Abomasnow Blizzard vs. 252 HP / 4 SpD Assault Vest Eelektross: 148-175 (39.5 - 46.7%) -- 34.8% chance to 2HKO after Stealth Rock
252+ SpA Eelektross Flamethrower vs. 0 HP / 0 SpD Abomasnow: 428-504 (133.3 - 157%) -- guaranteed OHKO
Miltank (F) @ Leftovers
Ability: Thick Fat
EVs: 252 HP / 232 SpD / 24 Spe
- Stealth Rock
- Body Slam
- Milk Drink
SpDef Miltank isn't something you see often but here's a situation where it could be useful. It naturally resists Abomasnow's Ice STAB and takes negligible damage from its other moves. It can LO + Toxic stall it and also set up Stealth Rock to punish it for switching out. Additionally, it can play mind games with it before revealing its ability (Sap Sipper or Thick Fat) and possibly score a free Toxic or Stealth Rock.
252 SpA Life Orb Abomasnow Giga Drain vs. 252 HP / 232+ SpD Miltank: 117-138 (29.6 - 35%)
252 SpA Life Orb Abomasnow Blizzard vs. 252 HP / 232+ SpD Thick Fat Miltank: 87-103 (22 - 26.1%)
4 Atk Life Orb Abomasnow Earthquake vs. 252 HP / 0 Def Miltank: 84-100 (21.3 - 25.3%)
This one is really obvious, but I love Stoutland and have been enjoying him immensely more now that 'tomb is around. Stoutland as a Counter because it can threaten out or switch-in freely and KO with Superpower while also absorbing status (from non CRO sets) and KO'ing with Façade
Stoutland @ Choice Band
EVs: 252 HP / 252 Atk / 4 SpD
- Play Rough
Some calcs showing that he can switch in freely
+1 0- SpA Black Glasses Spiritomb Dark Pulse vs. 252 HP / 4 SpD Stoutland: 142-168 (37.9 - 44.9%) -- guaranteed 3HKO
252+ Atk Choice Band Stoutland Superpower vs. 248 HP / 252+ Def Spiritomb: 260-308 (85.8 - 101.6%) -- 87.5% chance to OHKO after Stealth Rock and Leftovers recovery
252+ Atk Choice Band Stoutland Facade (140 BP) vs. 248 HP / 252+ Def Spiritomb: 229-270 (75.5 - 89.1%) -- 12.5% chance to OHKO after Stealth Rock and Leftovers recovery
Stoutland is also faster than Spiritomb, even with no speed investment, so it can do whatever it wants once it's in.
Raticate-Alola @ Darkinium Z
EVs: 252 Atk / 4 SpD / 252 Spe
- Swords Dance
- Knock Off
- Sucker Punch
While being a really good late-game wincon in a similar vein as Type:Null, CroTomb's biggest weakness lies in it only being able to use one attacking move which means it can be outright walled by a handful of Pokémon. I decided to choose Alolan Raticate because it can threaten to break through with a boosted BHE and you suddenly have something at +2 with priority you're forced to fight against.
0 SpA Spiritomb Dark Pulse vs. 0 HP / 0 SpD Raticate-Alola: 48-57 (16.4 - 19.5%) -- possible 6HKO
+1 0 SpA Spiritomb Dark Pulse vs. 0 HP / 0 SpD Raticate-Alola: 72-86 (24.7 - 29.5%) -- 100% chance to 4HKO
+3 0 SpA Spiritomb Dark Pulse vs. 0 HP / 0 SpD Raticate-Alola: 120-142 (41.2 - 48.7%) -- guaranteed 3HKO
+6 0 SpA Spiritomb Dark Pulse vs. 0 HP / 0 SpD Raticate-Alola: 192-227 (65.9 - 78%) -- guaranteed 2HKO
+2 252+ Atk Hustle Raticate-Alola Black Hole Eclipse (140 BP) vs. 248 HP / 252+ Def Spiritomb: 346-408 (114.1 - 134.6%) -- guaranteed OHKO
Granbull @ Choice Band
EVs: 212 HP / 252 Atk / 44 Spe
- Play Rough
- Fire punch
- Close Combat
Survives any attack and 1HKOes with Play Rough.
+1 0 SpA Spiritomb Dark Pulse vs 212 HP / 0 SpD Granbull: 91-108 (24.3%-28.8%) --99.1% chance to 4HKO
252+ Atk Choice Band Granbull Play Rough vs 252 HP / 252+ Def Spiritomb: 312-368 (102.6%- 121%) guaranteed OHKO.
Where de Subs At? (Togetic) @ Eviolite
Ability: Super Luck
EVs: 248 HP / 80 SpA / 180 SpD
IVs: 0 Atk
- Nasty Plot
- Dazzling Gleam
I'm posting togetic as a Check so I can win. I really hope this is self explanatory as to why Togetic checks that tomb set but I'll go into a bit of detail. Togetic is able to set up and take advantage of Spiritomb with Encore. While Spiritomb is locked into a move Toge can set up its Nasty Plots and KO Spiritomb with Dazzling Gleam.
EDIT: I forgot to mention that its an actual Hard Counter but we can forget that part