Soulwatcher helm

A device created by Lord Antigonus Balorodin with the aid of Magos Psykana Alendrixa. a fusion of Eldar and Imperial technology, the Soulwatcher Helm possesses a spirit stone that can be tapped into by the wearer, allowing them to effectively view the souls of individuals. The device is invaluable in detecting pykers and rooting out heretics, but carries risks as the psi-sight granted by the helm comes from the dead eldar spirit in the spirit stone. Such close communion could have a profound effect upon the wearer, particularly on their mental stability and judgement.

Source and references

• The Inquisition (Background Book)