Animation

No, everything is still the same, there is no difference.

Maybe I mixed up the folders? For the Undead, there are two folders for alternative upgrades; perhaps I confused the names, and the game can't find the file (this is just a theory, it often happens to me).

It turns out that the banshee is located in the Characters/Creatures/Necropolis/AlternativeUpgrade folder. I tried moving the animation of the Herald's ability to the banshee in this folder, but it didn't work. Then I tried doing the same thing, but with the banshee's attack, and it still failed; I can't understand what the problem is.