User blog comment:IamJakuhoRaikoben/Chapter 323: The Shadow That Comes And Goes, Review./@comment-4999650-20130315165847/@comment-3290324-20130315170308

That's a plausible theory. I wonder, if your theory is correct, what gives his Magic "life" as opposed to just being a tool like every other form of Magic (minus Zeref's Demons).