How about he runs into Stark forces on the way, they take him prisoner and Sansa has him executed. After all, he pushed Bran out the window, led Lannister forces against the North—even if he had a change of heart, there’s no reason to think that anybody else cares. It would be shockingly anticlimactic, but I think the…

I would be OK with Euron getting a more indirect death—killed in a sea battle of some kind, against a force commanded by Theon and Yara. Does he have his Valyrian armor on the show? It might be kind of fun to see him go over the side and get pulled down by its weight. In the depths, you can see a big, shadowy…