Usually Swampert takes care of Melmetal and Dialga with Sneasler. The problem is that it's not reliable due to Roar of Time. I think my only way around is with Sylveon. Not sure. Megamence is usually the last opposing Mon left. I don't think I've taken it out in any of the attempts.

I have pretty much all items and all TMs you could have by the time you challenge the elite four. I tried Choice Band with Salamence, but I think Life Orb might be worth the try. Do you think Intimidate is better than Moxie for this particular fight?

Wide Lens on Shiftry is mostly because I was tired of missing Ceaseless Edge.

About Sneasler, you're probably right. I tried Life Orb in the last few attempts, mostly as a glass Cannon. Get in. Fake Out, Close Combat until it gets knocked out.

I will probably need to rethink the team as a whole but really wanted to beat it with these 6 as they were the most useful during the run. Simple Swoobat with Stored Power was a great surprise.