Frustratingly Stupid Fire Mages

[Sombre]

That still won't make them cast flaming arrows, which he apparently needs them to, or the battle is much harder than it should be.

Retreating mages like that is also going to seriously slow his advance.

If the fire elementals are causing problems, they could be removed from the game via a mod. Not ideal, but people don't use summon lesser elemental that much anyway.