hi,
In that fight with black rose cult I choose to eradicate all (formian + cult).
Then some mob appears (a scorpion and a greater elemental).
Formian marked here attacked scorpion, but he doesn't seeme confused or anything like dominated. (scorpion had a AOO against formian)
So : why do they fight between themselves? is the scorpion an ally of me?
https://imgur.com/a/QBYqcVh
Here is his list of effects:
none seem related to changing side.