[quote=@Sho Minazuki]
Well not everyone without a ready source of light. If it's magic of any kind, Vega can cancel it out with brute force.

But yeah that'd a problem. 

How about... It doesn't make them phase out completely? Meaning they'll be 50% solid, but it has the better application of being able to jump from shadow to shadow, sort of like from Aragami. You can be struck by most anything with 50% effectiveness and have high mobility in that form, although a clean hit will throw you out of it.
[/quote]

Sure, Vega could cut the magic apart, if darkness wasn't the [i]absence[/i] of something, rather than necessarily its presence. If the spell just works by keeping light from entering its casting radius, Vega can't really cut away the magic without finding the edge of the bubble and attacking it there. And even then it's not really a corporeal thing that can be attacked...

Not that it would matter to Vega in the first place, since he'd be able to attack the body directly anyway since it's just made up of magic.