Which skills are best for a hero?

Fellow experts on Necromancers, tell me what the most effective build for a Necromancer is. It seems to me that there are many different options for this faction. Initial conditions: the opponents are diverse, including both mages and warriors. I built my Necromancer like this: - Logistics - Attack - Darkness - Summoning - Education But there are also two very useful skills - Luck and Sorcery. I didn't have enough slots for them. And some claim that it's worth taking Leadership to recruit neutral creatures. I would like to hear your suggestions regarding the development of Necropolis heroes. Maybe there are more advantageous development schemes? Thank you in advance.