Actually, the more I think about it, the better and better chance he has of winning. He just has too many things at his disposal to fight with.
If he invokes Eternity, it's over he wins 10/10. He's done it before, surely he can do it again, Eternity owes him a favor anyways.
Zatanna is a telepath on maaaybbeeee mid-level, Strange on the other hand is of the highest order when backed by the Eye, she dies as soon as he sees her. Or he simply banishes her into Deaths realm, or any realm.
Any transmorphication Fate or Zatanna can do, Strange can undo as he has with other matter manipulators.
Summoned demons will get banished? How? All of them? Doubtful.
How can Fate's helmet be taken off?
Simple, when he's wrapped up in unbreakable bands, Strange uses his TK to remove it, or has one of his millions of demons he can control do it. Remember, Fate is new to this whole Fate deal, he has far far less experience than Strange, a few thousand years less.
Nabu is Fate's backbone, that's all he has. Strange has taken on gods of that level on his own.
How will zatanna or fate know which Strange is the real Strange? His illusions fooled Loki and other high level mystics.
Wanda is a non factor, she can't control her powers and more than likely will hurt Strange and her own team, it's impossible to judge what she can do.
Exactly what happend in the Order series? 😈