Emrakul, the Exigent Doom

Legendary Creature — Eldrazi

{10}

When you cast this spell, untap all lands you control. Flying, trample Ward—Sacrifice three permanents. {3}, Exile this card from your hand: Target land gains "{T}: Add {C}{C}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

12/12

Rulings and every printing on Scryfall