These are definitely one of my most anticpated toy lines this year. I love, love, love M.U.S.C.L.E. and these really capture the same magic as those, but with some amazing art work as well.
Markatisu was nice enough to let me interview him about this incredibly cool toyline. Here's the link: http://www.thepicreview.com/2013/03/epic-interview-mark-creator-of-mystical.html
I definitely think Widowmaker is my favorite so far, although I'm really excited for the wrestling rings! Those will be great. Man, with these, SLUG Zombies, and **** along with all the other kid targeted stuff, I think we're in a new golden age of minifigure awesomeness!