This is a picture (larger version HERE) of Samurai Mario battling Bowser and what appears to be a dinosaur but what is actually a mutant Yoshi. If I can read the watermark at the bottom correctly the piece was created by artist Xiaobaosg. If I can't read it correctly it was made by somebody with a similar name
UPDATE: Using my detective skills and a large magnifying glass I was able to track down Xiaobaosg's DeviantART page AND burn an anthill in the process!
Hunting Season [Xiaobaosg's DeviantART]
Thanks to Alex-H, who once created a work of art so magnificent he had to burn it or risk blindness.