I rewatched season 6 of Game of Thrones in preparation for the season 7 premiere tonight, and it just occurred to me The Wall has a big problem: Bran Stark.
As Benjen was leaving, he explained to that since he was partially dead, he couldn’t travel with Bran to go past The Wall. There are all kinds of enchantments built into the foundation of The Wall itself which makes it impossible for the Night King and his army to pass. These are the same enchantments that prevent Benjen from going past the wall.
The Three-Eyed Raven was surrounded by similar enchantments, but was able to break through those because Bran had been “marked” when he was on a vision quest. Remember that burn on Bran’s arm when the Night King grabbed him?
This is probably blatantly obvious to some of you since last season, but I think that as soon as Bran gets past The Wall, it’ll give The Night King a free pass to go right through. There will be a big fight, sure, but the Night King and his army will make it through – all because of Bran.