[@Crimson Raven] My character utilizes illusionary magic. I said it was air-based, though, technically, it wouldn't fit any element. I say mine would be using the air to trick someone's mind. You can say one of the four major elements effects whether it is light or dark. Light itself acts like a particle and darkness is simply the lack of light. Therefore, you can say light is something like fire and dark is a lack of it. That's my suggestion.