Emrakul, the Aeons Torn

This spell can't be countered.
When you cast Emrakul, the Aeons, take
an extra turn after this one.
Flying, protection from colored spells, annihilator 6
When Emrakul, the Aeons Torn is put into
a graveyard from anywhere, its owner
shuffles his or her graveyard into
his or her library.