Sadly, these weapons are near impossible to forge in present-day Westeros; however, in post-Red Wedding season three, we see Tywin Lannister melt down Ice (the greatsword of House Stark) into two smaller swords.
Sansa's choice of words are pretty interesting as it could mean that her true protector is finally on her way to Winterfell. And some, are given a chance to climb. The title of the episode referred to Jon Snow and the wildlings ascending the Wall, but it wasn't the only climb in play. Littlefinger's conversation with Bran was unsettling, but it might actually be Arya who has better reason to destroy him. While using his silver tongue to convince Bran that he's there to protect the Stark family, Littlefinger mentions the chaos of the world. Bran spent all of the show's fifth season unseen, hanging out in a cave and tripping on tree drugs to transform into the Three-Eyed Raven, a mysterious figure capable of seeing through space and time into any character's history, allowing him to connect dots that would remain unconnected were it not for his convenient power of visual flashback. King Robert was the man who won the bet against Littlefinger.
First of all, Bran demonstrated he can't be manipulated by Littlefinger's BS. "Bran is a subject that can't be wooed in the same way that so many others have been wooed by Littlefinger, and he shows up there trying to gain an ally in Bran, and discovers that he's encountering a sort of unmovable force". He even argues that the mystery over the owner of the dagger is what started the War of the Five Kings and waxes poetics over how Bran must feel about the chaos that's arisen since he was forced to leave Winterfell. If Bran shares that tidbit with Arya, Littlefinger's days are numbered. It's only a matter of when.
But beyond all this scheming, "The Spoils of War" planted another hint in our brains: What if Bran was the one who sent the assassin to kill his younger self, so long ago? It's also here that both Varys and Littlefinger reveal to one another where their allegiances lay. But, if you're anything like me, the exact provenance of Littlefinger's "gift" to Bran might have slipped your mind six seasons and 10,000 subplots later.
Is the dagger's placement coincidence? Let's delve into what exactly it is, besides- as Brienne pointed out- a "very nice dagger".
Game of Thrones Recap: Does Daenerys Go into Battle? . If Bran can remember events from the future as much as those in the past, then the circular nature of time that we've seen in the show seems to imply that he will achieve his mission of saving humanity from the Night King.
In any case, Littlefinger should be seeing the catspaw dagger in his nightmares. But the whole situation is still a little murky, and some think Littlefinger hired the assassin himself so he could frame Tyrion for the crime.
Amy Ratcliffe is a writer for IGN and wouldn't last a day in Westeros.