The Midgard Serpent! That's who I was trying to think of when I made my Easter (What's a nice Christian holiday like you doing being named after a Germanic Goddess?) post. I suspect that the Midgard Serpent and Ouroboros are related, tracing back to some shamanic myth from the old days when we still remembered that we are animals. Do the Oz Aboriginals have a similar myth? I have some vague notion of an important serpent in the Dream Time.