>>55948283So, assuming it'll be throwing Water, Ground, and probably Poison at you, you'd need something that can resist all three whilst doing super effective damage. Can't take advantage of either physical or special damage since Swampert has balanced stats in both.
I think Bronzong might be the ticket.
Bronzong would resist Poison and Ground, but wouldn't be able to offer much in the way offense so you'd need to set it up as a support.
I'm thinking open with Safeguard to protect the team against potential poison, Reflect and Light Shield with Light Clay to further protect the others, then spam Metal Sound to drop special defence and hope the idiots you're PUBing with take advantage of it.
Or, depending on the Swampert's moveset, swap out one of the barriers for Psychic and alternate that with Metal Sound. If the damage is chipping away too much, swap the Clay for Leftovers.
Yeah, I think I'll do that.