Banshee

A banshee, also known as a "Groaning Spirit" or "Wailing Ghost", was a female undead phantom. Oftentimes they were the remnants of Elven women who possessed murderous persuasion or who dabbled in dark arts. The essence of these spirits hated all living things with an unholy fury; they could sense life approaching them and would attack anyone who trespassed in their territory.

A banshee didn't have a defined shape, but rather a misty form with vague and flowing features that mirrored her former form in life. As time wore on, a banshee became more and more distorted, though was still recognizable as a humanoid. Although their shape was incorporeal, the appearance of a banshee was horrific, and their mere presence would draw the energy from their surroundings to the point of stunting local floral growth.

The banshee's most feared weapon was a piercing wail that was as harmful as any material weapon. This scream was deadly to almost all who could hear, laced with psychic energy that could overwhelm the living. Along with their wail and terrifying visage, the mere chilling touch of a banshee would drain her victim of life essence.