Jeriko

+2: Have a creature you control fight a creature you don't control, but give your creature +2/+2 and Indestructible.
-X: Exile target creature with converted mana cost X. Gain life equal to that creatures power and toughness combined.
-12: If Jeriko would be targeted by a creature or spell for the rest of the game, destroy that creature before damage or counter that spell.