A Skull inhabited with the spirit of Mithra.

Cavelli, still apparently oblivious to the voice, begins to muse. “I’ve heard the skull you seek can speak to the minds of certain adepts, but Mithra cannot always be trusted. Backstory codex - Hunter (RPA-BC)

The Ossuary is where you run into Cavelli again looking for the skull of Mithra. A voice in your head tells you to lose Cavelli.

• Tell Cavelli of the skull and what it told you to do.
• Chase off Cavelli and listen to what the skull has to say.