Zorg, Emissary of Vengeance

Retaliation {3}(Whenever you're dealt damage, you
may cast this card from hand or graveyard for its
retaliation cost.)
Flying, first strike, haste, lifelink, shroud
At the beginning of your end step, if Zorg was
cast from your hand, sacrifice it. If Zorg entered
the battlefield any other way, exile it.