Tentacled pentagon wizard t-shirt design by Hector Mansilla. If you'd like the chance to buy it, vote at Design By Humans.
I don't know if it's that my tastes have changed or what, but lately I see lots of designs at DBH that I like, and almost none at Threadless.
*Previously: Pentagon says it will stop providing such easily detected Photoshopped images.
*Buy plush wizards at eBay.