Episode 7 finale Predictions
Spoilers ahead so be forewarned.
I did a search on the reddit and Westeros forums this morning and was surprised to find that no one is asking how the Nights King new that Dany would come to save Jon and his companions. I did see a few post wondering where he got the giant chains, but mostly these go no farther than explaining that the chains were seen on a ship in an earlier scene.
Well, what everyone seems to be missing is that there was no need to bring chains at all unless they were planning on hunting dragons.
John and the dream team find a white walker and his zombie minions all alone in a vulnerable spot. It may be true that this white walker has been on a recruiting expedition and was just returning to the arrowhead Mountain, and that's why he was so easily ambushed. But as the episode continues the Nights King's actions become increasingly hard to digest... unless he knew Dany was coming.
The white walkers have broughtexactly three nuclear powered throwing spears with them, for precisely three dragons, and could easily have used just one of the spears to annihilate Jon Snow and his companions on the island. Instead they waited. Why?
Find out here: