Grimlock, Fallen Angel

+1: Target creature you control gains your choice of flying, lifelink, or deathtouch until end of turn.
-2: Put a 1/3 white Angel creature token with flying onto the battlefield. Then, put a 3/1 black Horror creature token onto the battlefield.
-7: All players discard their hands, then you exile a card from each player's graveyard. You may cast these spells without paying their mana costs.