God of the Cold White Silence

When God of the Cold White Silence enters the battlefield tap all creatures your opponents control.
Deathtouch, Lifelink
If a creature would be destroyed by God of the Cold White Silence exile it instead, its controller loses life equal to that creatures toughness
Tap God of the Cold White Silence, sacrifice 3 creatures you control, add {10} to your mana pool. do this only to cast an Eldrazi creature