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To be honest, I paid more attention to the starting conditions, I remember something about the last level. Okay, let's keep the balance at 20. This is MAX.
ZYbr - how far are you in the campaign?
On Sandro! By the way, there are a lot of Necromancers in the campaign; are dead heroes better than living ones?:D
P.S. It's better not to set a level limit.