[MaxWilson]

I wonder if it's because they don't calculate that they're going to hit a lone target with Magma Eruption, and don't have any spells researched that would be better for a single target. That doesn't sound very plausible, though, since I'm pretty sure I *have* seen mages try to target individual cavalrymen with Magma Eruption. Maybe storm was in effect or some other precision-killing effect? I would check it out but I'm not at my game computer at the moment.

The only way to know for sure what's going on is to run the battle replay with the debug logger running.

-Max