Horntail's Arms

You'd all get mass sed and unless you keep yourself potted or have tons of hp, you'll probably die eventually from rocks or other attacks. What if you get sed, 1/1, and boom dead. Bishop wont' be able to heal cause it'll be sed too. Even then, bishop would probably die from rocks/other attacks.

Again with just regular sed, you'll need to take into account the person getting sed. What if they die? Will you give them heal? What about spawn?

I don't see a 1 party run, or even less, very plausible even if the 6 people were specially made characters, had godly gear, etc.

If you had a terrible worst case scenario like that, then one of the bishops could use Hero's will to escape seduce and heal away.