From what I've gathered in the show; Brann has some mystical power. What do you bet that just as the White Walkers are about to strike he stops them WITH HIS MIND!!!!!!!!
10/18 - King Diamond
10/24 - Pallbearer
11/01 - Suffocation
11/30 - Devin Townsend
12/06 - Distant Worlds: the Music of Final Fantasy