I loved the battle theme from that game! As for the sig, it is very good. I really like the C4Ds, though I wish they didn't cover up Mario quite as much. Good text and border. There isn't much flow, but I don't think that this sig needs much, to be honest. Once again, great sig. Nice work.
Try removing the C4D over the center of the hammer. Not all the way, though, just reduce the opacity over that part.