Harrowing

In the depths of the The Nihilisolis wanders a shallow shell of what once was man. A husk of humanoids long since forgotten. Left to rot and torment in the cold, dark and maddening caves these humanoid died, their ghastly spirits drenched in hatred of living. These creatures are called Bodaks.
When a Bodak tries to consume a humanoid creature, it's frigid putrid lips suck the life from every cell. If a creature is lucky enough to escape a Bodak after being in contact with it's lips the creature's skin might become infected. Those few who have survived and gotten the infection call it harrowing. There is no scream powerful enough to describe the pain of your body rotting in real time. Only way to stop the infection is with powerful healing magic or to cut off the infected part. Once someone is fully withered, a new Bodak is born, ready to continue the horror.