Pierce Abernathy, Ætherkine

{2}, {t}: Sacrifice a creature. If that creature
has Ætherkine in its name, you are dealt 2
damage and draw 2 cards. Otherwise, place a +1/+1 counter on Pierce and draw a card.

{1}, {t}, Sacrifice Pierce: Deal damage equal to
its power to target creature or player. This
damage can't be prevented.