Mr. Sinister claims the "Iron" Throne by Karl Slominski
I caught on to Karl's work after listening to the Heroes Con episode of the Felix Comic Art podcast. Jason Wood and Shannon Slayton both have pieces by him in their gallery. One of those talents that hasn't skyrocketed yet, but I'm certain will.
http://www.comicartfans.com/galleryp...?piece=1431079