Grist, Compleated Toxic

+1: Reveal the top card of your library. If it's a creature card, put it into your hand. Otherwise, you may put it on the bottom of your library.
-3: Destroy target artifact or enchantment. You gain life equal to its mana value.
-7: You get an emblem with "Creatures you control have hexproof and toxic 1. Whenever a creature you control deals combat damage, proliferate."