....wildfire. which is why when she asked Qyburn if it was just a rumor or something more, he responds "much more" . I think she is working on her backup plan and will 'burn them all' if it comes down to it.

I think this may also mean that somehow Jamie might be the one who ends up killing her....she'll be in the throne room giving the order to unleash the wildfire and Jamie will protect the innocent people of Kings Landing once again by killing his beloved sister...and since its GOT, he'll prob end up killing himself right afterwards for yet another WTF moment in the series.

let's see....