I am rereading Storm of Swords and in Arya's chapter in which she returns to High Heart with the Brothers without Banners, the Ghost of High Heart says the following: " I dreamt a wolf howling in the rain, but no one heard his grief. I dreamt such a clangor I thought my head might burst, drums and horns and pipes and screams, but the saddest sound was the little bells. I dreamt of a maid at a feast with purple serpents in her hair, venom dripping from their fangs. And later I dreamt that ma