Why auto-battle forced form changes?
This has nothing to do with Amius.
In auto-battles, mythics change form for no particular tactically justifiable reason, usually when the opposing team is all petrified (prevalent when Mithrala's in your roster in DT Hard), or in Arena when the oppsition is in SS. That not only is annoying, it can wreck a run for what amounts to a bug. They even shift away from the form that can actually deal best with the given state. 🤯
A humble request: since the future is with mythics, please fix the bug so they only shift forms when the player elects (again, nothing to do with Amius).