Why Don't My Mages Cast the Spells I Tell Them To?

[curtadams]

QXel said:
2-Yep, I guess so. But 4 Falling Fire onto 10 Militias while 20 HI or 10 HC chop my poor lava warriors ... Well, I don't comment any further, I'll be rude ...
Edit : It's doesn't make much sense anyway, because, if I remember well, Falling fire damage is armor piercing. So, casting it on a heavily armored unit isn't a so bad idea.

My impression is that the AI prefers casting its spells where they will to the most enemy damage/least friendly damage, NOT where they will help the most. My mages prefer to blast militia rather than heavy cavalry even when the cavalry will be a grave danger and the militia will be irrelevant. I suspect it just sees that firing at the militia will cause much more damage (which it will, of course) and so it ignores the cavalry.