Yes, but as you can see it is very specific in what you want to do

Don't forget Ice Devil

Quickness > BoW > Attack and other various spells.

The BoW spell should only be cast if the unit is melee combat friendly and only right before it charges into combat.

If this is too complex to script, turn it off. I'd rather have to take special consideration for every Combatant Caster than have to with every 2+ Water mage A.) Spread out and ignore any bodyguards (if any) B.) Fatigue out the caster so he is less likely to cast BoW.

This really isn't much of an issue except when battles progress a while and the AI gets confused on what to cast, you have a communion or you cluster your mages (to take advantage of spells like Luck/Body Ethereal), but it is a significant disadvantage of the AI as it wastes the fatigue and spell casting time by doing it.