Whispers of the Void

This tattered ash-grey robe, when worn, grants the wearer resistance to necrotic damage and advantage on saving throws against being frightened. Additionally, once per long rest, the wearer can unleash a haunting choir-like chant as a bonus action. All creatures within a 30-foot radius must make a DC 13 Wisdom saving throw or become charmed for 1 minute. Charmed creatures regard the wearer as a trusted ally; however, they can repeat the saving throw at the end of each of their turns, ending the effect on themselves on a success.