Eshgir, Blood Hunter

+2: Destroy target creature with converted mana cost 3 or less. You gain life equal to it's power.
-2: Take control over target opponents creature. Untap it. It gains haste until end of the turn. You lose 2 life.
-10: Destroy all creatures. Your opponents lose 3 life and you gain life equal that much life summed up plus all creatures converted mana cost.