Fall of Yuotleth

As an Additional cost to cast Fall of Yuotleth, sacrifice a Legendary Eldrazi Creature
Whenever you sacrifice a creature with Fall of Yuotleth,
it deals damage equal to its power to all opponent creatures without flying.
Creatures opponents control lose flying.
{c}{c}{t}: Sacrifice a Creature with Flying
Its final cry was not of anguish, but of acceptance.
its purpose was served