Wondrous item, uncommon
This object appears to be a common carpentry nail. However, you can command the nail to point to any nonmagical object, and it will turn and point toward it for 1 hour. You must have previously seen the object or must have a detailed description of it. There is no limit to the nail’s range, but the object must be on the same plane of existence. The nail can only be used to point at inanimate, non-magical objects. It can't point to living, undead, or constructed creatures.
Once the nail is used, it can’t be used again until the next dawn