Adran's Key Ring

This key ring comes with 1d6 keys on it when found.  The keys have different looks to them and are made of different kinds of material.  Each key can be attuned to a door of the users choice. Once attuned the user can use the keys to travel to the attuned door from any door that has a keyhole. Each key can only be attuned to one door and it takes 1 hour to attune it. multiple keys can be attuned to the same door. to attune to a new door the user must take an hour to attune the key to the new door.