Tested this set but haven’t yet gathered replays. It beats Pex & non Bulk Up Corvikinght:
Scizor @ Life Orb
Ability: Technician
EVs: 248 HP / 252 Atk / 8 Def
Adamant Nature
- Bullet Punch
- Sand Tomb
- Swords Dance
- Roost
I’ll let the calculations speak for themselves:
+2 252+ Atk Life Orb Technician Scizor Sand Tomb vs. 252 HP / 252+ Def Toxapex: 174-205 (57.2 - 67.4%) -- guaranteed 2HKO after Black Sludge recovery and trapping damage
(This is a 2HKo with sand damage even if pex hazes)
+6 252+ Atk Life Orb Technician Scizor Bullet Punch vs. 252 HP / 252+ Def Corviknight: 195-230 (48.7 - 57.5%) -- 48.4% chance to 2HKO after Leftovers recovery
+6 252+ Atk Life Orb Technician Scizor Sand Tomb vs. 252 HP / 252+ Def Corviknight: 452-533 (113 - 133.2%) -- guaranteed OHKO
(Can’t roost because you are slower)
252+ Def Corviknight Body Press vs. 248 HP / 8 Def Scizor: 82-97 (23.9 - 28.2%) -- 95.3% chance to 4HKO
0 Atk Corviknight Brave Bird vs. 248 HP / 8 Def Scizor: 114-135 (33.2 - 39.3%) -- 100% chance to 3HKO
EDIT: A more optimal EV spread is 232 HP / 252 Atk / 24 Def for minimal Life Orb recoil.