Bind Soul is a spell that allows the caster to imprison a human soul and control or murder the body. The soul has to be found and the caster must over come it's Pow. Once trapped the soul's body looses 2 Con per day until dead. The spell requires a suitable vessel to contain the soul. It can be released by breaking the container. The Powder of Ibn-Ghazi or other invisible revealing spells will show the link between the soul and the body.
Once the soul is imprisoned the magician can use the spell Compel Flesh to control the body like a zombie.
Bind soul costs 10 mp and 3 san to cast. Compel flesh costs 5 mp and 3 San to create and an additional mp for every ten game rounds that the spell lasts