Auto-translated
In the campaign, my Raialag also didn't have any mana problems if he didn't attack those he shouldn't. He ran away from heroes who had 1500-2000 imps. But in the campaign, mana and other characteristics are easier to manage – there are many ways to increase them. In the end, he had 350 mana. I agree that defense is useless for him. And Shadia also has darkness instead of something more useful. Unfortunately, my Raialag, at level 29, doesn't know how to cast enhanced spells. I hope he will learn this in the 6th campaign.