Undead – a Necropolis mod.

Of course, I've seen this model. Well, it's a sword that's not for everyone. And the fire around the sword had to be added later to match the other alternate skins.

Actually, this model of yours was the first thing that made me think about having new neutral creature models not only in the neutral faction but also in the other factions. That's why I started collecting similar creatures and, in some cases, modifying them. And the unnecessary alternate skins were sent to the neutral faction instead. So, no creature was lost. Because there's no guarantee that an interesting creature will spawn when you need it. But this way, it definitely will.