This is the WoW version of Haunting Wave:
A wave of Shadow magic that knocks targets back and deals shadow damage can be utilized by practically any class in WoW that uses Shadow magic. That isn't even close to a defining ability. In fact, the SPriest ability Dark Halo is highly similar to that ability.Haunting Wave
Instant
Releases rolling energy, pushing away enemies upon contact with the waves and inflicting 8262 Shadow damage every half-second.