Keening spirit

A Keening Spirit is a kind of Ghost, created specifically from the spirit of an evil female elf. Known for its constant weeping and groaning, the creature is sometimes referred to as a groaning spirit. A drow keening spirit is known as a kiaranshee, after the drow goddess of the undead, Kiaransalee.

Abilities
Although a Keening Spirit shares many of the qualities of a ghost, a keening spirit's most dreaded weapon is its wail or keen. This ability functions like the Wail of the Banshee spell.