Spawnrise of Ulamog

Annihilator 1 (Whenever this creature attacks,
defending player sacrifices one permanent.)

{4}: Put two 0/1 Eldrazi Spawn creature tokens
onto the battlefield. They have "Sacrifice this
creature: Add {1} to your mana pool."

{10},{10}: Cast any number of Eldrazi
cards you own from outside the game without
paying their mana costs.