Abraxos, Pyro Warlock

+4: Destroy target creature. If that creature had a total power of 4 or less, draw a card.
-4: Abraxos, Pyro Warlock deals 6 damage to target player, planeswalker, or creature.
-12: exile all opponent's permanents. If an enchantment was exiled because of this, you may cast it without paying its mana cost.