D.Va, Mech Pilot

Ultimate: Self-Destruct - (D.Va, Mech Pilot enters the battlefield with four charge counters on her. At the beginning of your upkeep, remove a charge counter, then, when the last is removed, destroy all creatures.)
Passive: Eject - (Should D.Va, Mech Pilot die, instead exile her then return her to the battlefield transformed under her owner's control.)
I play to win!