Ok so I read the Damon CS and have just one correction and a few little remarks.

The thing you should keep in mind is that Essence operates on a "no time/space" alteration policy. That also means no parallel dimensions. Now, there's a way around it, if you say for example that the place inside an amulet is alctually hidden in hell and the amulet is just a link to that space.The reason why I'm pointing that out is because I think your character resembles a black hole too much and I would like to avoid situations where he can pull just about anything from his sleeve. So what I suggest is that you tone it down a bit by saying that he can only keep so much matter inside himself and for only so long. Thus he can take it out if it hasn't been there too long to be digested and can only hold as much matter in as his own volume. Also, Id prefer it if he can only alter matter into a similar substance in order to avoid god-like powers of turning water into gold and completely altering the rules. Of course, its still possible for him to have remembered how to alter one thing into another even if he doesn't have the ingredients at hand at the given moment, but would at least know where to look.

My other remarks are more minor. 

1 - Demons evolve as they become wiser and learn everything about their current shape. Keep that in mind.

2 - In really liked the story with the demon and the village and just want to remind you that here angels are NOT about faith and have nothing to do with it. Accidents like the one you wrote can be an exception but they're not the usual in any way. 

Overall, really interesting character and definitely an original and amusing idea. Will be looking forward to seeing him and your bard in action. :)