Destoroyah

Flying, Trample, Wither, Annihilator 4
Whenever you cast Destoroyah, create X 0/1 red creature tokens named Aggregate Form with Annihilator 1. Where X is the amount of mana spent to cast Destoroyah. Whenever Destoroyah dies, create a 1/1 red carb creature tokens with wither equal to Destoroyah toughness.
{b}{r}:Destroy target artifact or creature. It can't be regenerated.