It’s gonna get worse before it gets better—13 Dire Predictions for Game of Thrones Season 7
7) THEON AND YARA GREYJOY DIE
Daenerys Targaryen has put together one hell of a powerful alliance, but no storyteller worth their salt will let her sit the Iron Throne without taking a few lumps first. That means Team Targarye will suffer some serious blows. The first disaster could occur when Daenerys deploys her Ironborn navy to survey the shores of Dragonstone before she lands the rest of her fleet. She sends one of her dragons — not Drogon — with them to provide an escort.
Picture it: Euron Greyjoy and his thousand ships appear, taking Yara and Theon Greyjoy unawares. A furious sea battle ensues. In the Song of Ice and Fire novels, Euron has possession of a horn that can control dragons. He uses it, and the dragon incinerates Yara and Theon’s warships, along with everyone aboard.
There’s been no mention of Euron’s horn on the show, but if it’s introduced, he could be a real threat indeed.