Keeping with grrm love for reference of Odin and sacrifice for power.Also while rereading the books I remembered cat and ned never married under the old gods but a Sept in riverrun.Maybe tell ned the old gods don't consider cat the lawful wife if they don't pledge themselves in front of them.
Thanks for the chapter but I feel that spells are a waste, even more so enchanting objects, it is not worth losing eyes or limbs for objects that only work once.