The Silver Halo of Soul-Stealing (Generic/Ritual, Cost, Instant, Per Day, Range: 3 Zones, Belkhanu/Hru'u): A glittering circlet of energy is sent spinning through the air to strike a target. The caster rolls WIS+2 vs. the target's highest skill. If the caster succeeds, the Spirit-Soul of the spell's target is borne away forever into the Unending Grey, leaving them a mindless automaton whose every action must be specifically commanded. Only a spell of Revivification or Re-embodiment can restore the target's Spirit-Soul. Any physical defense or cover is useless, and Disenchantment cannot help someone affected by this spell. But the spell can be deflected with a Warding spell, The Seal Upon the Powers, the Muniments of Excellence, and various temple spells that obstruct ritual magic. The spell affects all living beings, but not androids, automatons, undead, creatures produced by magic, and demons.
The above description contains direct quotations as well as paraphrasing of the original spell from Swords & Glory Vol. 2.