You mean that move that kind of looks like supersonic? (judging by the pictures).I viewed the episode pictures, and, believe it or not, there was a scene where Magnezone uses a move on a Sewaddle. But what move?
No, I don't what it is, but it does look like supersonic.
Edit: From looking at the pictures, I'm not sure how I feel about two different plots happening in a single episode. Especially one being trying to figure out what's wrong with Pignite, I don't necessarily think that's bad, just kind of seems pointless. I would've preferred a double battle. Charizard and Krookodile vs Excadrill and Dragonite. I think we know who would win that match up.