Emrakul, the Aeons Torn [Modern Masters 2015]

Set: Modern Masters 2015 Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {15} This spell can't be countered.When you cast this spell, take an extra turn after this one.Flying, protection from colored spells, annihilator 6When Emrakul, the Aeons Torn is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.