Welcome to the site Illuminati, when you get time I would venture over to the Introduction forum and give a little paragraph on who you are
As for your deck, I would start by going over to Kickstarter and doing a search for "Zombies" "Demons" and "Fantasy", maybe you already have, but your taking on a genre that has just been beaten to death. Some good, a lot not so good. Now you may have the "one" that just kills everyone that came before you, but if you haven't done the research, I would start doing so.
Your image is pretty cool, very reminiscent of a recent deck, I wish you luck, lets see some more of what your planning, and please take criticism in a constructive manner...it's gonna be hard, like I said, this is an overdone genre at the moment.