Blitzcrank

Passive: Every 2/2/0.5 seconds, call down a bolt on the highest Health nearby enemy that deals 60/90/150 Ability Power magic damage. Active: Summon a disco ball at the largest clump of enemies, then knock up the current target into it, dealing 150/225/999 Ability Power magic damage. They crash down into the disco ball, dealing 175/265/5000 Ability Power magic damage in a three hex radius. Enter The Groove for 1 second per enemy hit.