Bloodbender's Rise - Bloodchief Ascension (Borderless)

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