Infinite life + damage + mana + mill = winning

: Each player mills two cards.

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add .

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. (Damage causes loss of life.) 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.