Spawnsire of Ulamog — Rise of the Eldrazi #11

Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)

: Create two 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add ."

: Cast any number of Eldrazi spells from among cards you own outside the game without paying their mana costs.