[TwoBits]

I also think I remember hearing a good while back that mage "line of sight" is important, meaning the actual 'shape' of the battlefield might matter? That if your mage is behind a dip, and can't "see" the enemy, he might not cast? I'd be surprised if the game engine was that sophisticated, but who knows, and that's what I recall hearing, at least.

If true, I guess the moral is, have your Flaming Arrows caster further forward.