Hedron Fields of Agadeem Planechase 2012

“Creatures with power 7 or greater can't attack or block. <br>Whenever you roll Chaos, put a 7/7 colorless Eldrazi creature token with annihilator 1 onto the battlefield. <em>(Whenever it attacks, defending player sacrifices a permanent.)</em> <em>Note:<br> Oversized Card, not tournament legal.</em>”