Thanks to this fantastic video from Alt Shift X, Game of Thrones fans get the history of the Valyrian Steel swords in Westeros and their whereabouts.
For uninitiated, only two things can kill a White Walker, a Valyrian Steel sword, and Dragon Glass. Judging by trailers and various season 7 spoilers, Westeros is going to need a lot of them. The video clocks in at a little of 18 minutes, but it is very informative, so it is well worth the time.
It looks like white walkers are the big threat to Westeros in Game of Thrones Season 7 – and one of the only things that can stop white walkers are Valyrian steel swords. Where are all the Valyrian blades in Westeros, and how might they play into the future of Thrones?
This video contains spoilers for Game of Thrones up to Season 6 and Book 5.