Mixed bulk
Porygon2 @ Eviolite
Ability: Trace
EVs: 252 HP / 120 Def / 136 SpD
Calm Nature
IVs: 0 Atk
- Recover
- Ice Beam
- Discharge
- Your choice, be creative - Toxic? Rain dance? Trick room? Foul play? Thunder wave? Defense curl? Wonder room? Psych up? Sunny day? HP ground? Gravity?
The nature and EVs hit a "jump point" in sp.def, giving an extra point (actually an extra 2 thanks to eviolite)
The ultimate glue pokemon, with a customizable 4th move to make sure p2 is useful on every team and play style
252 Atk Life Orb Protean Greninja Low Kick (60 BP) vs. 252 HP / 120 Def Eviolite Porygon2: 133-159 (35.5 - 42.5%) -- guaranteed 3HKO after Stealth Rock
252 Atk Life Orb Protean Greninja Gunk Shot vs. 252 HP / 120 Def Eviolite Porygon2: 133-156 (35.5 - 41.7%) -- guaranteed 3HKO after Stealth Rock
252 SpA Life Orb Greninja Hydro Pump vs. 252 HP / 136+ SpD Eviolite Porygon2: 109-130 (29.1 - 34.7%) -- 100% chance to 3HKO after Stealth Rock
252+ SpA Choice Specs Magnezone Thunderbolt vs. 252 HP / 136+ SpD Eviolite Porygon2: 135-159 (36 - 42.5%) -- guaranteed 3HKO after Stealth Rock
However:
252 Atk Aerilate Salamence Return vs. 252 HP / 120 Def Eviolite Porygon2: 151-178 (40.3 - 47.5%) -- 53.1% chance to 2HKO after Stealth Rock
Thankfully most mence dont have 252 atk, and you can also get the intimidate on the first time.