Ix, Herald of Progenitus

+1: Create a 1/1 green Hydra creature token with trample. It has "At the beginning of your upkeep, put a +1/+1 counter on this creature."
0: Exile the top three cards of your library. You may cast creature cards exiled this way until end of turn.
-6: Create a legendary white, red, green, blue and black 10/10 Hydra Avatar creature token with Protection from Everything named Progenitus.