Amulet of Clandestine

This amulet has the the holy symbol of Sybthea displayed on the front, on the back is the symbols of the Three fey courts with a warding symbol in the middle. The amulet give the wearer the ability to use the spell Alter Self, with advantage against hiding from fey. But, if user tells 3 lies outside of their name and whereabout the spell fades.