Considering the specific nature of this hero (I know where he, or rather she, comes from), we could suggest an alternative specialization, something like the goblins' ability, but it should work differently. That is, in a battle with this hero (Sylvanas), a unit of the opposing side, whose numbers have decreased to a certain percentage, would switch to the enemy's side. But most importantly, I think the hero should be named something else. It's not good to completely copy heroes/characters from other games/universes. In general, the idea is great. And as a follow-up, I often read your forum out of interest and have already seen many posts requesting the creation of forest elves or something similar (they really aren't in the game). Why not give the people what they are asking for instead of making yet another set of identical necromancers, demons, etc.? This is just my opinion.