Gavin, Shadowbon Tyrant

+1: Until your next turn, up to one target creature you control gains menace and lifelink. If it's a Demon, put a 1/1 counter on it.
-2: Exile target creature. Its controller loses life equal to its power. You gain that much life.
-7: At the begging of each opponents upkeep, they sacrifice a creature. Whenever a creature an opponent controls dies, create a 2/2 black Demon token