Sgnir nur tuo fo rewop!
That alone makes Zatanna a huge part of the team.
Etrigan has punched Supes to the moon and is pretty much a badass.
Sentinel could give any of them a fight one on one. Black Adam as well.
I think the pure diversity of the mystic group gives it to them.
Hal Jordan falls last, but the mystics win 7/10.