Xeno Dismemberer

When Xeno Dismemberer enters the battlefield it fights a creature an opponent controls, if the creature dies, it gains +2 +2
until end of turn
Blood Thirsty - Pay {p/b} or discard a card.
If you do, Xeno Dismemberer fights a target creature an opponent controls, if the creature dies, it gains +1 +1 until end of turn