AI Behavior editor : How do I cast Mirror Image only if my caster does NOT have mirror image effect on him?

[Gel214th]

What the title says. 

I want my caster to keep up his Shield, Mirror Image and a few other defensive spells. Some of the spells have no inspiration that goes along with them such as Concentration. So I need to only cast them if my character does NOT currently have this spell cast on him. 

A great example is Mirror Image.  However, I cannot see a Condition like "Self: Is not affected by Mirror Image"  or something like that. Can anyone help?

[dgray62]

Unfortunately there does not seem to be conditions like this in the AI. You might consider having your caster cast it when health drops below a certain threshold, since if you're losing health you've likely lost the spell, unless of course you're playing a blood mage.

[Boeroer]

Indeed, there is no such condition.

Bit maybe that's for the best because if you get hit by Arcane Dampener (which can happen a lot in the mid to late game) your character would cast Mirrored Image over and over again with no effect. 

I would work with a timer (like at least 30 secs between casts for example or something like that) and (low) health as combined condition I guess.

[Constentin Lévine]

Maybe this mod can help you, the description seems exactely what you search :

https://www.nexusmods.com/pillarsofeternity2/mods/88