Undead – a Necropolis mod.

As I mentioned before, there is no need to create an animation for unicorns when they attack. The attack animation looks incorrect. White dragons are retextured black dragons with a paladin as the rider.
These models were taken from NHF. There are also skeleton mages and other models there. These are the ones that are available to everyone. If you tell me how to add screenshots here, I will upload them.

I am interested in the screenshots. There are many models in NCF, both good and bad. I think you have selected only the best models, and there are also some improvements.

Regarding screenshots:
On the message editing screen, at the bottom (in the "Additional Options" panel), there is a "Manage Attachments" button. Upload the necessary images there. Then, at the top right (above the message field), there is a drop-down list "Attachments". Select the necessary images from the uploaded ones, and they will be inserted into the text. You cannot see the images directly in the editor (only the code), so to view them, click "Preview Message" at the bottom below the message field.

As I mentioned before, there is no need to create an animation for unicorns when they attack.

Then, you should not create a casting animation for them either. Firstly, converting a melee unit into a ranged unit looks unappealing if there are no justifications (including visuals). And from the point of view of animation, the "no animation" option looks very buggy: a sharp transition to an unnatural, static pose and back.