Just a thought I have had since the season 7 trailer: Where does the fire come from in this picture?
Drogon seemed to recognize Jon. Was it only as a friend or as a Targ? Maybe it was enough of a meeting that the dragon(s) my bind to Jon as well. I know it is generally one Targ bound to one Dragon. However, they sense when Dany is in danger. Will they now sense when Jon is in danger and come to the rescue? Will their dragon fire hold the undead army at bay so that some of the party can escape? I don't see Benjen being able to make that much fire.
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