Palossand @ Weakness Policy
Ability: Water Compaction
EVs:244 HP/12 SpA/252 SpD
Palossand's ability water compaction and his naturally good defense has really caught my eye. Basically, if he's hit by a water move, the weakness policy and his ability will give him +2 in attack, defense, and special attack. Shore Up allows him to heal, and earth power and shadow ball are his two STAB moves.
Goodra @ Assault Vest
EVs:252 HP/252 SpA/4 SpD
Now, Palossand's defense is pretty great but special sweepers absolutely destroy it. So, since Goodra has the second best special defense in the game, it is a really good substitute for special teams. Sludge Bomb covers pesky fairy types, dragon pulse is stab, and thunder+muddy water is for coverage.
Accelegor @ Damp Rock
EVs:252 HP/4 SpA/252 Spe
The centerpiece of the team, accelegor can support both palossand and goodra. Rain dance allows for Goodra's ability Hydration, Water Shuriken activates water compaction every time it hits, allowing palossand to get up to +6 defense in a single turn, and acid spray lowers the enemy's special defense by two, which essentially doubles the damage output and in most cases is a better support move than helping hand. Plus, he's the third fastest pokemon behind zacian(banned) and ninjask(whom no one uses).
Porygon-Z @ Life Orb
EVs:4 HP/252 SpA/252 Spe
If one of my main sweepers die before they dynamax, Porygon-Z is a really good sweeper for the job. Recover heals, and tri attack plus hyper beam is adaptability boosted STAB damage.
Sabeleye @ Lum Berry???? plz help
EVs:252 HP/4 Atk/252 Spe
Sabeleye is my second support that is much more flexible. Quash is for speed control, shadow sneak is really good for finishing enemies, fake out for the extra damage, and helping hand for the extra damage.
Edit: Using clefairy instead, here's the moveset:
Clefairy @ Still don't know
Ability: Friend Guard
EVs:252 HP/252 SpD/4 Spe
Incineroar @ Aguav Berry
EVs:252 HP/4 Atk/252 SpD
Despite Palossand having a crazy amount of defense at this point if my opponent sets up too much or has a move like darkest lariat then I'm in trouble. So, by spamming will-o-wisp and parting shot I can basically undo however much setting-up they've done, plus fake out for extra damage and darkest lariat for actually doing damage.
Edit:Didn't know about the VGC series 6 ban list, so using arcanine instead, with most of the same moveset but snarl instead of parting shot and extreme speed w/ flare blitz. Same EVs, nature, ability, and held item.