Glob, the Eternal

Whenever you cast a creature spell with mutate,
you may pay {1}. If you do, put a +1/+1 counter
on each creature with mutate you control.
At the beginning of your upkeep, if you control
ten or more creatures with mutate, you win the
game.
Born from a primordial ooze, Glob has survived countless eons and witnessed the rise and fall of civilizations.