At the beginning of your postcombat main phase, if four or more cards are in your graveyard, conjure (A conjured card is added to the game.) a card named Mox Jet into your hand. This ability triggers only once. : Put target creature card with mana value X from your graveyard onto the battlefield with a finality counter (If a creature with a finality counter on it would die, exile it instead.) on it. Activate only as a sorcery.