http://kate-fox.deviantart.com/art/S...ht-2-488306129
So this is the "Fallen Knight" from something called Slumber Land. I think it's a Russian version of one of those e-trading card games. I haven't been able to find much information on it since the website is just a bunch of teaser pictures and a single blog post.
This is why you shouldn't charge into battle against a viscous amorphous black ooze creature naked, I guess.