Wow. What an absolute fantastic idea! Unique and fascinating. I love the Norse mythology (how could I not?) The atmosphere you create is perfectly creepy and haunting - the Nidstang, the Fimbulwinter, the Svartaetheling. I don't know how you manage to combine this with humour, but it works so very well. Draco's wishes, Harry's "pliability" - hilarious! Awesome!