>>17036647Medicham with Skill Swap as a partner.
252+ Atk Light Ball Pure Power Pikachu Volt Tackle vs. 252 HP / 0 Def Giratina: 267-315 (52.9 - 62.5%) -- 99.6% chance to 2HKO after Leftovers recovery
252+ Atk Light Ball Pure Power Pikachu Volt Tackle vs. 252 HP / 0 Def Dialga: 267-315 (66 - 77.9%) -- guaranteed 2HKO after Leftovers recovery
So basically, any non ground type switching into a base 150 Volt Tackle will be in a world of pain.