Just a quick correction, it's only a 2x weakness to ground, so not even super egregious at that.What do people think about a sweeping set with Air Ballon and Rock Polish, something like:
Muk-Alolan @ Air Balloon
Ability: Poison Touch
EVs: 4 HP / 252 Atk / 252 Spe
Jolly/Adamant Nature
- Knock Off
- Brick Break
- Gunk Shot/Poison Jab
- Rock Polish
Muk's excellent defensive typing means it only has one (4x) weakness to ground, which Air Balloon covers nicely. So with it's excellent natural bulk, it is almost guaranteed an opportunity to set up rock polish, and between its stab moves and brick break has (near?) perfect coverage.
With Adamant it sits just below 400 speed, and with Jolly 436, allowing it to outspeed most of the unboosted metagame. So a jolly set outspeeds the entire unboosted meta, other than Mega-Zam, Mega-Aerodactyl, and Phero, and of those only Aerodactyl is really a worry as it can one bang the other two.
It's an interesting set, I'd be curious to see how it performs in practice.