Iron Token

An annis hag can pull out one of her iron teeth or nails and spend 1 minute shaping and polishing it into the form of a coin, a ring, or a tiny mirror. Thereafter, any creature that holds this iron token can have a whispered conversation with the hag, provided the creature and the hag are on the same plane of existence and within 10 miles of each other. The holder of the token can hear only the hag’s voice, not those of any other creatures or any ambient noise around the hag. Similarly, the hag can hear the holder of the token and not the noise around it.
A hag can have up to three iron tokens active at one time. As an action, she can discern the direction and approximate distance to all of her active tokens. She can instantaneously deactivate any of her tokens at any distance (no action required), whereupon the token retains its current form but loses its magical properties.