In the White dwarf treasure tables expansion for Advanced Heroquest, it includes the "talisman of detection" as one of the monster magical items, however I can not find an explanation of what the talisman of detection item does. Does anyone know what it does?
Later in the treasure tables expansion, it states that there are 3 types of talismans, but the talisman of detection is not included in that list. I wondered if it was a talisman containing a detection spell, but there appears to be no detection spell in the 4 types of magic available in Advanced Heroquest.