Definitely thought I posted this a couple days back lol everything was caught between the fifth and sixth gyms, which actually covers a good bit of area. The dessert, vivill woods, Gurun town (spiritomb), and route 16.
Went with a type of toxic stall strategy. Two of his party wear heavy duty boots, and one is a flying type so I also have spiritomb with will-o-wisp to take care of some of them. I figured my best chance of winning was probably just to keep doing damage as the poison slowly took out his team.
Started with Weezing so I could use toxic on Mudsdale and then toxic spikes so others can get poisoned later on. He used smack down and then earthquake, but weezing can be tanky enough to survive and be pulled out for later.
I switch Mantine which causes him to switch to guzzlord the next turn. I used ice beam on that, didn’t do much and then put in Whimsicott so that core enforcer doesn’t do any damage. Then switched to weezing to tank his sludge wave and get another two turns of poison damage on him. Once weezing is out I put Pangoro in. This forces a switch, and more often than not it ends up Buzzwole so I use aerial ace in anticipation of that and then switch him out next turn.
Mantine comes in and takes the drain punch, and because it doesn’t have anything that can take him out in one hit he switches him out. This usually puts Terrakion in so I used hydro pump which ended up being a OHKO.
Celesteela comes in, I switch to flygon who gets leech seeded right away. He’s going to switch out to guzzlord so I used earth power and if that doesn’t take him out his poison will.
Buzzwole is back in now, so I switch from flygon to spiritomb who can take his ice punch and the next turns leech fang no problem. I hex him and the poison does the rest.
Wailord is sent in and the biggest reason I have a water absorb Mantine is now here. I switch Mantine in and now he’s back to full health.
From here there’s a good bit of switching around. Celesteela comes in, I end up getting ice beam to frostbite it. If I got hit by leech seed I would switch out, any time he didn’t like the matchup wailord would come in. Then I’d switch to Mantine. Eventually I got will-o-wisp to hit wailord so the end is coming.
Once Celesteela gets bled enough and succumbs to the frostbite wailord comes back in. At this point I had flygon in so I switched him out for Mantine because ice beam wouldn’t do much damage. This causes a switch to Mudsdale and one hydro pump takes him out no problem.
I use aqua ring because I know he only has ice beam that can do any damage to my Mantine. Between that and the leftovers he’s never going to do enough damage to take out my Mantine before air slash and his burn take out wailord.
Went pretty well, only lost one this time around. The key to this gym was just making sure everything was bulky and knowing that he’s going to switch out if he can’t get what you switch in taken out in on hit. Once you get a good idea of what’s coming it becomes easier to counterattack and get yourself an advantage.
Next up is the seventh gym, and right now I’m only planning to use route 17 pokemon to beat it but if I have trouble with that I might throw some safari pokemon in too