Progenitus, Primal Alara

When you cast Progenitus, Primal Alara, you get
X experience counters. Then, if you have 100 or
more experience counters, you win the game.
Progenitus, Primal Alara's power and toughness
are each equal to the number of experience
counters you have.
3{r}{g}: Return Progenitus, Primal Alara to its
owner's hand.