I know this sounds kinda crackpot but lemme know. I just read it for the first time and this was my immediate thought. So this was a fantastic chapter!! Theres a lot going on here but the first thing I want to discuss is the ravens. I've heard a theory about some form of "Raven Code" where they foreshadow important events to come. I am now pretty sure that this is a real thing. It is pretty obvious that Bran and BR are controlling the ravens and can communicate through them. I think this could be the way Bran communicates with the outside world and lets everyone know he is alive. Here's how I think it's gonna go down. Stannis, Theon, and company will make their way to the island for Theon's execution. They get there and the tree is covered with ravens. We've seen BR do this before and Raventree Hall seat of house Blackwood, of whom Bloodraven is a Great Bastard, is named for such a phenomenon so i believe it cannot be ruled out. Stannis will go through the execution stuff all the while everyone making comments on the number of ravens on the tree. As Stannis is speaking, the ravens begin to reply in complete sentences as Bran wargs into each bird says a word and wars out. Stannis sees this and sends Theon to the Wall with the rest of the party going in that direction.