Amulet of the Evil Twin

A powerful magical artifact that has been lost for centuries. The amulet is a delicate wooden sphere with many irregularly-shaped holes in it. It is made of a darker wood on one half, and a brighter-colored wood on another half. The amulet, when activated, creates a phantom version of the wielder's enemy. The amulet is also sentient. It telepathically speaks to the person who wields it, and is described as having an impish, defiant personality. It is said that the amulet tries to corrupt its wielder when it is first in the wielder’s possession. If it’s attempts do not work, then it will give up and become compliant. The amulet of the evil twin was originally created by a powerful hag. Since she was killed, the amulet has passed hands from adventurer to adventurer, until it was recently lost.