We haven’t seen Melisandre yet in season 7 of Game of Thrones, but judging from the trailer for the season HBO released at Comic-Con today, she’s going to have a pretty big role to play. In the new footage, Melisandre meets up with Daenerys in Dragonstone, and promises that she and another (Jon Snow, one assumes) have a role to play in some upcoming showdown. We can only hope this means we’re getting some dragon versus White Walker battles.