Did this for the Calgary Comic and Entertainment Expo (http://calgaryexpo.com/) and their traditional gaming event (http://calgaryexpo.com/gaming), which, if you're in town, starts this Friday and should be a blast.
It'll be a giant banner over the event, hoping the participants enjoy the backdrop to their battles. I've made the joke that it's the Dragon guarding all the prizes up for grabs, because I'm strange that way. Based loosely off the Dungeons and Dragons, dragon.
Notes on creation: Done with a combination of Zbrush, Corel Painter and photoshop. Original size is 7500 by 6000.