Earthdawn - Who Really Kaers?
The adept detects hidden weapons by making a Detect Weapon Test and comparing the result against the Detection Difficulty of any concealed weapons within short range of Visibility. If successful, he spots the weapon and learns the type, but is unaware of any magical properties it may possess. Once the adept notices a concealed weapon, he becomes aware of its presence and is alerted to possible treachery. As a result, he cannot be Surprised by an attack made with that weapon unless the weapon’s owner takes different measures to gain Surprise against him.