The Last Thing You'll Ever See

Until end of turn, you can't lose the game. Your
life total becomes 0. At the beginning of the next
upkeep, you lose the game.
Exile your library, graveyard, and hand, then
exile all permanents you control. Search your
exile for 3 cards, then put those cards into your
hand. You may play those cards without paying
their mana costs. Until end of turn, you may pay {0} rather than pay your commander's mana cost.