Extra shadow
From Twilight Heroes Wiki
extra shadow
Plural: extra shadows
Now, you clearly already have a shadow, but who knows what another might be handy for? Making a shadow version of yourself seems like a recipe to die over and over in a watery shrine, but maybe making your enemies into shadowy versions of themselves... might be handy.
Miscellaneous Item
Autosell value: 15
Combat Usable
How Obtained
When Used in Combat
You fought their shadow too, so that's gotta be worth another X experience.
Notes
X is 50% of the XP you gained normally (rounded up).