Ready your expletives and tough-guy Shakespearian rants, TVLine reports that Deadwood’s Ian McShane has been cast in a “small (but reportedly pivotal) role” in HBO’s Game of Thrones. McShane will briefly appear in Season 6 as a character “of key importance.” The Emmy-nominated English actor, best known for playing the delightfully potty-mouthed Al Swearengen in HBO’s western saga Deadwood, will shoot his Game of Thrones appearance after wrapping up work on Showtime’s Ray Donovan (which means we might have to start watching Ray Donovan or something). We only have until the end of Season 8 to convince McShane (and GoTs’ writers) to stick around on the series. HBO president Michael Lombardo recently confirmed that Game of Thrones would conclude with the eight season (although he “would love for [producers] to change their minds”). Game of Thrones’ sixth season premieres in April 2016.