The Soul Stealer

From publisher blurb:

Presenting the vilest of the vile, the Soul Stealer. This class focuses on the character's ability to slay the living and consume their souls to increase his physical might and empower his dark arts to continue the slaughter. This specifically evil class will work well within an evil campaign or as a new NPC to cause your player characters nightmares. A bastion of negative energy, the soul stealer even gains a small complement of necromantic spells to aid him in his goal of twisted infamy and dastardly greatness.