There are various shrines in Dereth that allow a Player Killer (PK) to regain the protection of Asheron and become a Non Player Killer (NPK).
You are enveloped in a feeling of warmth as you are brought back [sic] protection of Light.
List of Shrines:
File:Adja's Memorial icon.png Adja's Memorial 82.5S 93.4E (Vesayen Isles)