if it ends up having something to do with Zodiark that could possibly fit in with my theory of him not being evil...

That said, there isn't much we know about it yet. At the least it draws power from out own self, usually negative feelings but if the whole thing at 58 was pointing towards emotions in general maybe (with certain ones of course being stronger for it EG Love and Hate) then...well that actually shows a good bit how it could be just as destructive towards us as it is helpful. Too much anger and we lose control of ourselves, yet love too could lead us to doing something drastic that ultimately kills us.