Karov, Twisted Soul

+2: Exile a creature from your graveyard. Target opponent loses life equal to its converted mana cost. You lose 3 life.
-3: Tap two target creatures. This ability can be activated at any time as long as you have less than 11 life.
-10: Deal 5 damage to target opponent and each creature that player controls. You gain life equal to the damage dealt this way.