There is no doubt by now that Bran can see visions about the past, present and even most probably the future.
Drogon (Daenerys Red Dragon) Flying over King’s Landing
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Bran has already seen this vision in season 4, what will Drogon be doing on top of King’s Landing remains unknown, but it seems that it will definitely happen in the future.
Aerys Targaryan (The Mad King) Screaming Burn Them All
Aerys Targaryen is Daenerys’ father, also known as the Mad King. Jaime Lannister served as his Kingsguard. In Season 1, Jaime told Ned Stark how the Mad King killed Ned’s father and brother. In Bran’s vision, we see the Mad King screaming “Burn them all”, which according to Jaime in Season 3 (When he was telling the story to Brienne), the Mad King wanted to burn King’s Landing after losing the war against Rebels (Robert Baratheon and Ned Stark war)
Jaime Lannister Killing the Mad King and becoming the “Kingslayer”
Jaimie Lannister was in the Kingsguard of Aerys Targaryen (Mad King). According to the story Jaimie told Brienne, The Mad King ordered Jaimie to bring him Tywin’s Lannister head (Jaime’s father), because Tywin sided with Robert Baratheon against the Targaryens. As a result, Jaime Lannister drove his sword in the back of the Mad King as he was screaming “Burn them all”, and killed him, and since then Jaime Lannister became known as the Kingslayer.
Winter is Coming!
This seems like the snow and blizzards are coming to the North, According to Melisandre: “Death is coming for everyone and everything. A darkness that will swallow the dawn“. It seems the white walkers will be able to pass the wall this time around seeing that the Night’s watch members are heavily decreasing?
More White Walkers
It seems like the white walkers can turn human kids into white walkers. We have already seen this in previous episodes. But now at least Bran knows how they multiply.
Making More Wildfire
We all know what wildfire is, and what its explosion can do. Tyrion used it against Stannis ships, and destroyed most of them. Both the Mad King and Cersei Lannister are fond of the wildfire. It seems like Cersei Lannister is still ordering the pyromancers to make more wildfire.
(Possible Spoilers below)
Wildfire Explosion Under King’s Landing!
Here’s where it gets interesting. The Mad King wanted to burn King’s Landing, but he never did. Which makes us believe that this explosion will take place in the future. Cersei Lannister said many times in the past that she would burn cities to the ground:
“I would do anything for you. Anything to keep you from harm. I would burn cities to the ground”
“I will burn their cities to the ground if they touch her”
“I’ll burn our house to the ground before I let that happen”
Cersei will be facing a trial by combat against the Faith (High Sparrow) in the next few episodes, and in case she loses, she will have to be punished, and as a result, she might set King’s Landing on fire and burn it to the ground.
In addition, Dany had a vision in the House of The Undying, that the Iron Throne will be covered in snow.
Ned Stark and His Sister Lyanna Stark?
The armor shows a Northeren Leather armor, which indicates that this is most probably the young Ned Stark. The blood is Lyanna’s Stark blood. It seems that in the next few episodes, we will finally know what really happened with Lyanna’s and whether she’s really Jon’s Mother (Theory: R + L = J)