Enchanted silver coin

From Yggdrasil D&D

A silver coin enchanted by Geralt's blood magic to allow direct communication between him and the wearer.

Previously in...

Session 21 As the Four Feathers plan to head into the Siren Woods, Geralt gives the coin to Cynic to keep in touch.
Session 22 Cynic communicates through the coin his whereabouts with Geralt and asks him to protect Lavarr.