The infamous artifact of Vaermina, which create a doppelganger of the target.
Using the Skull of Corruption on an opponent creates a duplicate of the victim. However, this duplicate will attack the original, not the wielder of the Skull.
Cool to see this artifact being made! I think the reason your texture looks weird is because it's inverted. You could instead just try darkening it while increasing the contrast.
2 comments
I tried and it's better (but not satisfying enough).