Wraith

After death, though black magic, a creature's soul can be prevented from departing to the spirit world.

 

Instead, the creature appears as a shadowy wraith, which can only be harmed by magic or magic weapons.

 

Wraiths can drain life energy from its victims, though not to the extent of a vampire.

 

The main difference between a wraith and ghost is that a ghost is self-created - tied to a haunted place thru force of its will to avenge a trauma or crime.