This lock appears to be an ordinary Lock and comes with a three keys. The tumblers in this lock magically adjust to thwart thieves.

Any of the three keys will open the lock, however this lock requires a DC 20 Dexterity(Sleight of Hand) check with Thieves' Tools to open. On a failure, the lock will refuse to open until the next dawn. If the attempt would fail a DC15 check, the Thieves' Tools are destroyed as well.

If all three keys touch the lock within one minute, the lock can be magically removed. It can then be magically installed in another similar object (e.g., door, chest) replacing an ordinary lock.