The Haunt spell unleashed by this ring (every 3 seconds) works for all classes, functioning identically to the Witch Doctor's spell, but dealing more damage over longer duration. It will not benefit from runes and enhancements, if any, but in return, the Haunting that results can occur even if a follower is the one to wear the ring.
Stats (Level 60)
Band of Hollow Whispers
The mutterings of souls trapped within the ring grow louder as their power is drained with each spell cast by the wearer.