[Twan]

Just tested, it works but has an interesting side effect :

By chance number of images isn't based on caster level but on the target one, so troops get just one.

But all air mages get a number of images = their air level, like if they casted the mirror image spell themselves (I see no way to give them just one).

So it's an excellent spell to buff an army of thugs with air magic.

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But there is a potential problem with the spell AI. I fear the AI will recast this one as soon some units have lost their image.