Light for the Necromancer.

Necromancers don't need light! Look at their abilities; I think they're useless, plus Necromancers can't use some types of magic at all! Darkness is more than enough! And you can't nerf summoning! Resurrection is very effective in the late game. Vampires may lose hit points, but they also get resurrected in large numbers! As a result, the opponent's attacks are useless; they can attack three times, but I can resurrect everyone in one turn (for example). I don't want to write about every light spell, but for example, antimagic is useless in a game against a human. They'll immediately change their tactics. Teleport isn't needed either, except when attacking a castle. Yes, and about divine retribution. It's terrible! Who needs to lose a lot of their army in order to cast magic later? And it's impossible to convince an opponent to attack skeletons when there are living vampires!