Goz, Chosen of the Raven

+2: You draw a card and lose 1 life. Each opponent mills a card.
-2: Target creature gets -X/-X until end of turn, where X is the number of cards in it's controller's graveyard.
-X: X must be 2 or more. You draw X cards and each opponent mills X cards. You have no maximum hand size for the rest of the game.