NHF – new heroes for Heroes V 3.1.

I just played Shagrat on the standard "School" map with bots on "hero" difficulty. In a month, I got +11 to attack at level 17, which clearly goes beyond the limits of balance. For example, Tilsek would have +8 to attack and defense for only one unit of Orcish Warriors at the same level, and Shagrat's bonus grows faster than linearly on such maps, while Tilsek's grows even slower. Although, Shagrat is quite balanced on small dueling maps. His imbalance starts to show on larger maps with many neutral creatures, and it also depends on the difficulty, which again determines the number of neutral creatures. On the same map and difficulty, I started playing with Fagus, and after the 2nd turn, the bonuses stopped being given. I played another 4 turns, and nothing changed. Also, the hero's stats at level 4 are 4 0 1 1, which indicates that 1 unit of knowledge has also disappeared somewhere. Another question: does Delia receive one additional stat point, or does she simply replace one stat with another, taking the one that is higher and reducing the one that is lower? In my opinion, if it's the latter, then this special ability looks weak compared to the others, although Delia's initial spells are strong, and there's nothing to say about that. In general, almost all new heroes have initial spells, unlike the standard ones.