- How to defeat Galtran?

Let's say, an explosion (chain lightning) + slow effect (skeletons simply won't reach...). Magic should be well-developed, of course, but I don't think that's a problem. There probably won't be any problems with Utopia, as only Black Dragons have complete immunity to magic.

Added 3 minutes later

In my opinion, Livuel has never played against a human Necromancer. Because even if not controlled by Galtran, having an additional thousand or two skeletons by the end of the second month is a pretty good reason to start worrying about your hero.

I have played, but a thousand or two skeletons by the second month!? I haven't seen that!!! Maybe it's on the easiest difficulty level?