I was actually surprised that only one person responded to this thread! ((
Regarding the dragons and their abilities.
I just looked at them in the game. By the way, everything works perfectly.
My impressions are that the Black Champion is simply magnificent!!! Out of 5 points, I would give it a 6 for such a rework!
The spectral dragon looks much better in the game than in the screenshot, but there are two comments.
Firstly, you used the same texture for the rider and the dragon's armor, which results in the rider blending in with the armor. It would be better to create some contrast, for example, make the rider's armor not so light, but darker. And leave the cloak light, spectral.
Look at the Black Champion - both the rider and the dragon are black, but the difference in shade is clear, and they don't blend together. It turned out very well.
Secondly, the spectral dragon's "deadly strike" ability is a clear imbalance, because the 25% chance to kill half of any unit is very powerful, in my opinion! I think this unit would be better suited to some kind of frightening ability, since it is a ghost. Or the ability to avoid attacks like ghosts, but since this is a high-level unit, the chance to avoid damage should be reduced for balance reasons.
And also, a small detail - in the Dark Champion's description, there is a line "kills his enemies to pieces." You probably meant "tears apart." And about the Ilite, it was already mentioned above.
Otherwise, I repeat - the work is beyond praise!
Added 1 minute ago
I agree - let's wait until impressions accumulate from the actual gameplay.
Time will pass - we'll discuss the balance again.
PS - but the Champions shouldn't be nerfed. They should be warriors, not spellcasters.
Their abilities should be purely supportive.