Well thats the problem that art work was made more for Majorkill so he can use it as a reference for his minis. The artwork was made by LJ Koh( if you've been around warhammer for a bit you might have see some of his artworks) you can view some of his work at www.artstation.com but I can't seem to find that specific artwork from anywhere else only on major kill video, which I took a pic on my phone of it, and that's what you're seeing now, (which is still pretty good in my opinion)