When you deal the killing blow to this enemy, its haunting spirit escapes from the corpse and screams into your body, roll+WIS. On a 10+ the spirit has a tenuous grasp on you, it will trouble your dreams. On a 7-9 the same, but the spirit also haunts your waking life and will occasionally speak to you. On a 6- the spirit might briefly take control of you during moments of weakness. The spirit will stay with you until an appropriate ritual is performed to expel it.