ZENTOYO illustrated the Chinese (Standard) version of Agrus Kos, Wojek Veteran, which, for some reason received alternate art, from that of all the other Languages. As the images of non-English cards don't show up in the Gatherer database, I have no idea what it looks like. Note that the gatherer database does not usually show promotional cards. The gatherer can also experience difficulties with links like this. If you are taken to an error page, go to "languages," selecting Chinese (standard), then click on "advanced search" at the top of the screen. Once on the advanced search page, scroll down to the artist search bar, input ZENTOYO, then click "Add," and go back to the top of the page to click "Search." You should arrive at the page linked above.
If its image were displayed, you'd be able to view it here: http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=111286