[quote=@NobodiesHero]
So I think of Spirit as the channeling of pure energy, of using your physical and mental strength basically. So the opposite of that could be some sort of draining element, that draws energy from other things and uses that?
[/quote]

I mean...Spirit kinda can be inferred as being "The Soul", wheras maybe the opposite of that would be "The Body", IE: Vitality or something. Draining stuff to increase your power sounds like a very NOT-good guy like power for one of the heroes of the gods to have.