The Crescent Reaper

The Crescent Reaper:

Once an infamous Jewel Thief, this young lady had the misfortune of stealing one jewel too many. After successfully breaching the labyrinth, and overcoming its many traps, she entered the central chamber to steal the Minotaur Medallion. As soon as her fingers brushed the medallion's surface, she was hit by the spell that protects it. Her soul now consumed by the curse transforms her into the terrible spectre; the Crescent Reaper.

This possessed being now dwells in and around the forest near the chamber where the jewel still resides. Acting as the guardian of the medallion that enslaves her, she hacks and slashes, by moonlight, any intruder who dares to step into the forest to possibly steal the medallion for themselves. Her only chance or hope of breaking the spell, is if someone more devious than she is/was can escape the wild, and yet deft, swing of her scythe, steal the Minotaur Medallion and flee to the edge of the forest alive.