Jodah, the Unifier

The legendary nonland card exiled may be cast immediately. If you do not cast it immediately, you don’t get to cast it at a later time.

If you exile your entire library without exiling a legendary nonland card with lesser mana value, you will randomize the exiled cards and they again become your library, ending the effect. You will not continue to exile and shuffle your library forever.

If you choose not to cast the card, it remains in exile. The rest of the cards will be put on the bottom of your library in a random order.

The types and mana value of a double-faced card in exile are determined by the characteristics of its front face. The mana value of a split card is the total mana value of both halves of the split card added together.

Both Jodah, the Unifier’s triggered ability and the spell cast with that ability resolve before the spell that caused the ability to trigger, even if the original spell was countered in response.

If the card has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.