When equipped with a white msu, the helm emits a bright light, blinding creatures within a 20 ft radius, providing clear illumination within a 40 ft radius, and shadowy illumination within a 60 ft radius. The wearer is not blinded by this effect, and gains 20% concealment. When equipped with a black msu, the helm creates a globe of darkness in a 20 ft radius, giving 20% concealment to all creatures within the globe. The wearer can see perfectly in this globe, and the 20% concealment does not apply to attacks made by the wearer, and creatures in the globe are denied their dexterity bonus to AC for attacks by the wearer. Level 15