Ulamog, the Infinite Gyre [Rise of the Eldrazi]

Description

Set:	Rise of the Eldrazi
Type:	Legendary Creature — Eldrazi
Rarity:	Mythic
Cost:	{11}

When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.