[Agema]

Move your mages nearer the front?

Some of the Evocation artillery you'd probably want to default to if the AI declines to cast your script will have short(ish) range. If you're too far back, they can't hit anything, so they'll cast self-buffs or summon elementals. Although to be honest, mages summoning elementals when they have spare gems is one of those little frustrations that's hard to avoid.