Deadwood‘s Ian McShane and Max von Sydow (Minority Report, The Exorcist) are the latest to sign on to Season 6 of Game Of Thrones, HBO has confirmed. McShane’s role is being kept under wraps, but Von Sydow will play the Three-Eyed Raven, the mystical tutor of Bran Stark who was seen briefly in the Season 4 finale (played by a different actor).

HBO President of Programming Michael Lombardo said last week at the Television Critics Association summer press tour that the fantasy drama likely will end after the eighth season.

McShane recurs on the current season of Showtime’s Ray Donovan. His other TV credits include The Pillars Of The Earth and American Horror Story. On the film side he’s appeared in Pirates Of The Caribbean: On Stranger Tides, Hercules and John Wick. Two-time Oscar nominee Von Sydow next will be seen in the upcoming Star Wars: The Force Awakens.