Relic of Gluttony

This face-covering veil, modest in size, possesses a unique property. Once donned, the veil plunges the wearer into complete darkness, yet grants them the ability of blindsight. Its purpose was originally to devour the physical and spiritual essence of a person, resulting in a capricious outcome, but also afflicting the user with an insatiable and escalating hunger. Furthermore, it could be employed to transfer this hunger onto an opponent, compelling them to betray an ally.