i guess realms of men vs. the Night King esp. since Jon Snow pledged fealty to Dany. Jon is actually Aegon and her nephew (?) but he doesn't know that so he is actually Fire and Targaryen, not winter/snow or Stark. tho it i dont' know which one of them is the rebirth of The Prince/Princess that was Promised.
also i've re-watched The Door and cried again and Battle of the Bastards like 3 times each in between this season.
that would be a major plot twist!
i think Frost's Stopping by Woods on a Snowy Evening is also good foreshadowing esp. w/ the last passage.
ugh that would be the worst! we just gotta stay alive until late May lol.