Yvruul, Voice of the Void

You may cast exiled cards as if they had flash and spend mana as though it were mana of any color to cast them.
You may only cast land cards from your hand.

If a permanent would be sacrificed, exile it instead.

{c}{c}{c}, Remove a permanent you control from the game: Transform Yvruul. Activate only as a sorcery.

"And when nothing comes, it's already too late."
—Ugin