Help! I'm playing against human players with mages, and my hero is Orac, while theirs is Laslo.

Yeah, he also messed around with the magic a bit... 3 magic schools, in my opinion, is unnecessary – two would be enough. Taking Light just because of the Seal, I don't know... Now you can end up with bad perks because they'll start targeting Light units more often (since it's the Academy's main school), and Darkness is effective against physically strong races, but its perks will be less frequent! Fireball, I completely agree that a character with that build isn't a threat!!! (+1) Although, if you think about it, taking Darkness can also be risky; here, it's okay, nothing can be changed, but in other games, it might be costly... This isn't a core magic school – in the guild, you might not get what you need, for example, at level 3 (when building a library), you might get 2 Chaos spells + a Light spell + a summoning spell; this can also happen at level 5 (but there will be 3 spells instead of 4)... You need to know the guild's spells and then develop a specific school, in my opinion, to avoid getting a bad outcome, and if it's on a large map, you can even use Self-Aid!