Zirnarog, Chaos Twin

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
Zirnarog, Chaos Twin's power and toughness are
equal to the highest power among eldrazi
creatures you control. If you do not control
another eldrazi sacrifice Zirnarog, Chaos Twin
and search your library for an eldrazi creature
card and put it on the battlefield tapped.