Found a rather interesting bug (it's hard to call it a feature). Having the Earth Magic skill but not having the Earth Magic book, I couldn't cast "Oil." Although other travel spells and the like are cast normally. And the very definition of the Earth Magic skill sounds like this:

Earth Magic Book
The book contains all spells of the Earth Magic school.

Please look into this issue and fix it. Also, I would like to see a darkened book icon in battle if there is no Earth Magic book. Because if there is even one scroll, the book is active, although you still can't cast anything. Or should it be possible to cast spells from scrolls without a book?

Also, please fix the spell activation for units that are immune to it. In particular, Berserk on skeletons without the black orb doesn't work, although the spell is active when you hover over it.

Added 7 minutes later

Hello everyone.
First of all, thank you to the developers for such a wonderful mod. Many interesting and pleasant things have been added and improved. Especially the list of map templates. Finally, now you can immediately load the map that is interesting, and not start many times until the desired template is randomly generated.

However, there is a question: is there a True Random template, which is included in the mod, for 4 or more players?

The template is designed for 2 players.