You’ve said Euron will sacrifice his ironborn fleet to destroy the Redwynes. I was just wondering who will then make up most of his army for Garllas to eventually take down (just ironborn? Wights? Cthulhu minions?)

poorquentyn:

Yeah, I think @racefortheironthrone is right that it’s hard to interpret the Crow’s Eye tying the priests to the prows of the Ironborn ships in any other way, especially given the ramp-up of “thousands” of blood sacrifices committed by his men in the area, Euron’s history of turning on those who serve him and handing out “poisoned” rewards, and the visions (from Moqorro and Melisandre as well as Damphair) of Euron’s “black and bloody tide.” 

For the record, though, I don’t think he’s doing it just to destroy the Redwynes. I think he’s doing it to attain something resembling godhood: 

“The bleeding star bespoke the end,” he said to Aeron. “These are the last days, when the world shall be broken and remade. A new god shall be born from the graves and charnel pits.”

“One most of all. A tall and twisted thing with one black eye and ten long arms, sailing on a sea of blood.”

As for who follows him to Oldtown after that, I have two guesses, judging from the tone and imagery we’ve seen so far. One is that Euron (whose ultimate role I think is as the story’s Night’s King/Bloodstone Emperor figure, responsible for unleashing the Long Night) reanimates the dead sailors wight-style, which may be what the true prophet of the Drowned God saw at the end of ADWD: 

Patchface jumped up. “I will lead it!” His bells rang merrily. “We will march into the sea and out again. Under the waves we will ride seahorses, and mermaids will blow seashells to announce our coming, oh, oh, oh.”

The other is that Euron wakes something up below the waves with this mass magic-enhanced blood sacrifice on the open water. The Deep Ones history in the area is well-established, both Varys and the Tolands have mentioned krakens stirring (the latter specifically saying it’s in response to blood), it’d be a hideously perfect close to Damphair’s story to face undeniable proof that the humanoid god around whom he rebuilt his life was a projection and the real thing is a monster summoned by Big Brother, and there’s a ton of worldbuilding (Patchface, the squishers, the kraken horn on Claw Isle, the imagery in “The Forsaken,” the relevant material in WOIAF) that could be paving the way. 

In other words, think a mix of this:

And this: