While I will probably not know who did this, would you mind getting a close up of the just the single Misty in the top right? The artists "signiture" is most easily viewable there. With a closer shot of the card, someone might recognize it.
Based on the signature it looks like Ashley Jordan's work. Here's an interview. Note the URL to her website in the article is broken. I think this is her Facebook page.
The only info the seller had was that it was at an SCG event.
URGEDH Biovisionary.dec BShirei WBSelenia
The brain is the muscle that pumps stupid through the body