Emrakul and 15 squirrels

This spell can't be countered
Emrakul & 15 squirrels costs {1} less for each eldrazi or squirrel on the battlefield. Flying, protection from instants & colorless spells.
-When you cast this spell create 15 1/1 squirrel creature tokens with reach. If an opponent does not say the quoted text, exile target permanent.
"HOLY SHIT"!!! — Your Opponent