Spoiler alert: do not read on if you have not seen season six, episode nine of Game of Thrones (Battle of the Bastards). Go watch it, we’re waiting.

http://giphy.com/gifs/d3bRi425g7haw6DS

There are a lot of things to talk about after Battle of the Bastards, but here’s something understated from the episode that could have serious ramifications for the next episode.

During Tyrion’s encounter with Daenerys, he explained what her father, the Mad King Aerys, had planned for King’s Landing if the Lannisters entered the city – this plan was what Bran saw flashes of in one of his visions, and what Jaime Lannister killed Aerys for. As Tyrion explains, “He had caches of Wildfire, hidden under the Red Keep. The Guildhalls, the Sept of Baelor. All the major thoroughfares. He would have burned every one of his citizens: the loyal ones and the traitors. Every man, woman and child. That’s why Jaime killed him.”

Remember that the Sept of Baelor is where the High Sparrow and his Faith Militant spend most of their time. This throwaway remark ties into a theory that fans have been speculating about even more since episode eight – ‘No One’ – in which it was revealed that Cersei would not be able to use The Mountain in a trial by combat, and must instead have a trial in the Sept. In that episode, Maester Qyburn mentioned a ‘rumour’ that Cersei had heard about, and fans think this rumour could be the Wildfire under the Sept of Baelor.

There have been other hints dropped throughout the series – including Jaime Lannister’s suggestion to Edmure Tully in the same episode that Cersei would “burn cities to ash” to protect her children. Cersei’s son Tommen is in brainwashing danger from the faith, and she herself is in dire straits – the suggestion being that she is going to light the wildfire underneath the Sept of Baelor, purge the Sept (and possibly all of King’s Landing) of all the Faith Militant (and possibly every living being too…)

Another reason it’s likely that Cersei might use the Wildfire is because of this part of the vision Bran had while the Three Eyed Raven gave him his final lesson:

http://giphy.com/gifs/EEPs1LpkCzPb2

Although this clip was surrounded by shots of the Mad King Aerys, we know that the Mad King did not achieve his goal of using the Wildfire, yet here we see it burning up through a tunnel – a tunnel that probably lies beneath King’s Landing somewhere. Bran can see the future as well as the past – so this could be a vision of Cersei’s plan coming to fruition.

What do you think? Is Cersei going to burn King’s Landing to a crisp?