**Spoilers ** Spoilers
So I think maybe the stage is set for Dani to become a bit of the 'Mad Queen'
And someone kills her before the final Victory. Likely assassins are Arya, Sansa, or how about the King Slayer becomes the Queen Slayer.
I don't see Tyrion able to do it, but I guess that's possible too.
Who is your left field choice for sitting on the Iron Throne at the end of the series?
Tyrion is mine.
I think the shock on Eurons face is not about more dragons but the tactics being used. maybe the direction... the defenses they have against the dragon all appear outward. if he appeared behind the defenses they may have none.