Unlucky costume fur
From Twilight Heroes Wiki
unlucky costume fur
Plural: Unknown
So, if black cats are considered unlucky and other colors of cats aren't, it stands to reason all that unluck has to gather in the fur. That part makes sense.
It's hard to say why the fur from a black cat costume is equally unlucky, though.
Miscellaneous Item
Autosell value: 15
Combat Usable
How Obtained
When Used in Combat
Unknown