[thejeff]

Of course, you can always wave your hands and say it's magic. But then why not wave your hands and say blood magic works underwater, which is where this whole chain of thought started.

Besides, it's not based on the God's whim, but the nature of the ruling race. If you played Neifelhiem with a Heat-3 deity (which would be dumb), he might like heat, but all of his people, giants and humans alike still produce better in the cold.