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Here I am, waiting for the criticism, and now let's begin: let's take a look at the female units. And who is this beautiful woman with a whip (she can have the "Subdue" ability), besides that, giving her invisibility is not a good idea; it's better if she shoots, and now the Faceless One has invisibility. Also, you can play with defense and HP, but I don't think it should make a big difference – this is about the Faceless One (and it's not for nothing that he's a puppeteer, so let him have "Subdue" as one of his abilities). I agree with the Beasts; what can be offered as a counter to "no retaliation"? By the way, the Liches need to be made of smaller creatures to maintain balance: 3 large and 4 small. It's too strong for Vampires to have "Stun" on the third level. Now, about the Knights – I even came up with a description: Dark Knights – Death Paladins riding tireless horses and spreading plague throughout the world. I'll think about how to develop this further.
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Yes, this is the Green Dragon.
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All dragons are Children of Light, no matter what. If they can blind (this is from Elrath's description), then let them, like the Children of Light, also have immunity to blinding. There are many skills, and therefore the differences are only in one for each