Emerald City Comicon Artbook, 2011
Twixraider has sent me a link to this fabulous witchy artwork.
I know nothing more about the Emerald City Comicon Artbook that appears on this page [but see UPDATE below], but if you look here you will see that brandstudio have published, among many other things, an Emerald City Comicon Artbook in 2009 and 2010 as well. They all look great, and the price seems very reasonable … and if anyone buys one they can tell me who should get the credit for this fab artwork!
[UPDATE 29 May 11: Thanks to the all-knowing Skott I can now identify the artist as "Adam Hughes, comic pin-up artist extraordinaire." The artist's DeviantArt gallery is here; the page for this image is here.]