Ulnath, Creature of the Void

If Ulnath, Creature of the Void is not cast from exile, you lose the game
{7}{b}{c}: Exile this card from your hand, you may cast this card from exile if you discard your hand
{3}{b}{c}{t}: return target card from exile to your hand: you may play it next turn without paying it's mana cost
{1}{b}{c}{t}: Exile target card from your graveyard, you may pay 4 life and exile target card on the battlefield