Milo's Walking Stick

Milo's walking stick is an item that can be used to determine how many hidden passages or locations are present in a given location. The user may etch a line with the tip of a walking stick around an object or structure, then break the walking stick. The stick will break into a number of fragments, plus the handle, equal to the number of rooms that have not been explored. If everything has been explored the stick will not naturally break.