Chameleon key

Chameleon keys were a variety of enchanted keys that could mimic others, much like their namesake the chameleon, and were popular in the the Dalelands in the 14 century DR.

Description
These large, iron keys were mundane in appearance and measured in length. Their only unusual characteristic was that they lacked teeth.

Powers
When pressed up against another key, a chameleon key would change its size and shape until it became an exact duplicate of the key it was pressed against. It would retain this form until it was pressed up against another key. However, upon the fourth key it was pressed against a chameleon key would lose its magical effect and become locked in that new form.

Chameleon keys could also be made to duplicate the appearance of other enchanted keys, though they would not inherit that other key's magical properties. They could only open whatever locks that enchanted key could open, including magical locks.

Notable Owners
Most guilds in the Dalelands possessed one or more chameleon keys.