Nightmare vs Justice League

Alright Nightmare is looking to kill the Justice League he has 3 days of prep can they stop him?

Nightmare- http://marvel.com/universe/Nightmare

vs

Justice League
Superman
Wonder Woman
Batman
Flash
Martian Manhunter

Batman puts him in a full nelson (like Strange did) and the fight is over.

Nightmare is a fxxking joke.

Nightmare.