The origins of these masks are unknown. Only 6 are known to exist, all are identical in shape and size. Simply placing the mask over your face and peering through the eye sockets the user can see signs of demonic influence. Some examples are a red mist seeping from the ear of someone who is being manipulated by a temptation demon, those posesed are seen with a ghostly visage around them, and those who have given themselves over to demonic forced are seen with a vile black sludge oozing from their body.
Within the rim of each mask is a name. If the name is spoken while the mask is worn it bonds to the users face and transforms them into a demonic form. A grusome humanoid shape with bone spines from knuckles, knees, back, shoulders, and head. Worn armors and clothing are destroyed in the transformation.
Form lasts for a number of rounds equal to x3 your level (3 rounds for novice, 6 rounds for seasoned ect). Changing can only be used once per day.
Demon form is Toughness 10, Str+1d6 dmg on a slam (shoulder, head butt, back) and Str+1d8 on a strike. +2 armor vs fire or necrotic sources. Horror 6.