Thank you! Everything is clear.
It seemed to me that the effect of even an expert "Magic" skill is small...
Do you think it's better not to level it up?
And instead of Magic, what is preferable to level up – Leadership or Mysticism? And what do you think about Awareness and Tactics?

The Hero has 8 skill slots, I think. What skills would you optimally level up for him? Or does it depend on the hero's town?
For a Necropolis hero, for example, what is better to level up?;)

Magic can be leveled up if there are no other alternatives. It's best to forget about Awareness and Mysticism altogether. Leadership is a matter of personal preference; some people like it, others don't. Tactics are usually necessary. Many consider it the best skill.

In general, you should definitely take: Logistics, Earth Magic, Armor, Air Magic (if you can have 4 damage-dealing skills). Choose the rest depending on the situation from: Attack, Pathfinding, Water Magic, Fire Magic, Tactics, Wisdom, Archery, Necromancy, Diplomacy (if possible).