That is hugely crappy to see your work get ripped off, and done so poorly. Can't imagine how that feels. Sure hope you can prevent any further sales.
You have an amazing piece of art there, but probably not too many people beyond these boards know about it. Spread the word, get social, do all that stuff and when you are ready for the Kickstarter or whatever you'll have people lined up to get them.
Your art and cards is fantastic, truly wonderful. Even though it's not my style, and not something I'd want to do in my own decks, I am horribly, crushingly envious of your work.