Emrakul, Mother of All

This spell can't be countered
When you cast the spell take control of all opponents during their next turn
When Emrakul, Mother of All enters the battlefield take control of all creatures
Flying, trample, annihilator 6, protection from spells and permanents
All creatures you control are eldrazi in addition to their other types and have annihilator 1
Emrakul, Mother of All's power and toughness are equal to 15 plus the number of creatures you control