Oh really?. I do not remember... But I don't think the protagonist is blind, but you give me examples to remember.
At first Rex is an idiot but then he redeems himself as a person.
He already has an incredible ability, with it he can easily steal and escape. It also seems like he's not an idiot, he was able to deduce the behavior of most of the family members.
I think the attack will be more about getting Sansa, she is the key to the North. Plus, she is easy to use and manipulate at this point in the story.
Game of Thrones: Reign of the Dragonking
TV · Master4thWall