Bloodchief Ascension

At the beginning of each end step, if an
opponent lost 2 or more life this turn, you
may put a quest counter on Bloodchief
Ascension. (Damage causes loss of life.)
Whenever a card is put into an opponent's
graveyard from anywhere, if Bloodchief
Ascension has three or more quest counters
on it, you may have that player lose 2 life. If
you do, you gain 2 life.