Bran says…

Bran says, “Write your house name in a 3 by 3 grid. Place an X in the middle square, an O in the top left, and another X at the bottom of the middle column. Finish the game, and shift all Os forward one letter in the alphabet. Speak the 7th and 8th (by turn) letters after the leader of the lions roars, and your family will be saved.”