The Great Cthulu

+2: Destroy target creature. Its controller creates a colorless 0/1 Mindless token with "at the beginning of your upkeep, mill 2 cards"
0: Create two colorless 0/1 Mindless tokens under your control with "at the beginning of your upkeep, mill two cards"
-7: You get an emblem with "if there are no cards in your library, you win the game."