I've used this team in many past matches for my youtube channel (around 2019 IIRC) and they're unironically pretty based, but I wanted to hear what y'all think.
(M) @ Focus Sash
Ability: Natural Cure
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
IVs: 0 SpA
- Haze
- Toxic
- Perish Song
- Fly
(M) @ Leftovers
Ability: Gooey
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Bomb
- Ice Beam
- Flamethrower
- Thunderbolt
(M) @ Shell Bell
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
IVs: 0 SpA
- Poison Jab
- Brick Break
- Dragon Claw
- Swords Dance
(M) @ Yache Berry
Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
IVs: 0 SpA
- Iron Head
- Rock Tomb
- Shadow Claw
- Bulldoze
(M) @ Roseli Berry
Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Flash Cannon
- Surf
- Dark Pulse
- Charge Beam
(M) @ Salamencite
Ability: Moxie
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
IVs: 0 SpA
- Outrage
- Roost
- Double-Edge
- Tailwind
Now, I'll go over what they do because this probably looks like a weird team to the avg PS player or something.
Altaria is the weakest link. it's not really a good Pokemon, but it's still incredibly useful.
Haze is an obvious one, it's used to cancel sweepers before they go ham. The focus sash also helps to make them stop dead in their tracks. Well aslong as there's no stealth rocks.
Toxic, Perish Song and Fly work surprisingly well together, but generally I go for Toxic and Fly. I don't like fly, but if it wasn't there the Altaria could easily get fucked by a simple taunt.
Perish Song is esp useful in Anything Goes. It can't miss and anyone who dares using an annoying Drifblim or Smeargle will get rekt ez. The effect carries over Baton Pass.
If it turns out completely useless in a fight, I can just use it as buffer damage for a Pokemon switch or just to annoy the opponent. Toxic sure is toxic mate.
Goodra is the tank, it takes hits and then returns a ton of damage back to the opponent with its array of moves. It can pretty much hit almost everything supereffectively. I use it mostly to annoy Physical attackers, I actually prefer using Garchomp to deal with Special attackers like Gardevoir,
Haxorus, Garchomp, Hydreigon and Salamence are all my ultra fast attackers. They all have a good amount of speed to outspeed most things in the game as far as gen 7 is concerned. Charge Beam may look stupid on Hydregon, but an almost guaranteed special attack increase and another move to hit superffectively foes is def the reason why it's even there. Haxorus is great for Mold Breaker, too bad it doesn't learn any steel type move I had to resort to Poison Jab + Brick Break to cover its weaknesses. Garchomp is like Goodra in the sense that it focuses on type coverage too. Salamance can be good: Double-Edge + Aerilate combo is great, I also like Tailwind, it's been useful in some fights. Too bad the only steel type move it learns sucks, but to compensate it does a buttload of STAB damage.
The only part I'm a bit sceptic about are the items. The Focus Sash on Altaria and the Salamancite on Salamance are great, but then there's just berries and the Shell Bell. Those berries did prevent the Pokemon from fainting from an ice or fairy attack every now and then during battle, so they're not totally useless, but maybe it could've been better TBH. Also these Pokemons were very fast in gen 7, but now that they're outclassed I'm thinking Dragon Dance would do well for most of them.
With this team alone I managed to get around 1400 ~ 1500 evo. It's not impressive by this site's standards, but I've never pulled it off with any other monoteam.

Ability: Natural Cure
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
IVs: 0 SpA
- Haze
- Toxic
- Perish Song
- Fly

Ability: Gooey
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Bomb
- Ice Beam
- Flamethrower
- Thunderbolt

Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
IVs: 0 SpA
- Poison Jab
- Brick Break
- Dragon Claw
- Swords Dance

Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
IVs: 0 SpA
- Iron Head
- Rock Tomb
- Shadow Claw
- Bulldoze

Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Flash Cannon
- Surf
- Dark Pulse
- Charge Beam

Ability: Moxie
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
IVs: 0 SpA
- Outrage
- Roost
- Double-Edge
- Tailwind
Now, I'll go over what they do because this probably looks like a weird team to the avg PS player or something.
Altaria is the weakest link. it's not really a good Pokemon, but it's still incredibly useful.
Haze is an obvious one, it's used to cancel sweepers before they go ham. The focus sash also helps to make them stop dead in their tracks. Well aslong as there's no stealth rocks.
Toxic, Perish Song and Fly work surprisingly well together, but generally I go for Toxic and Fly. I don't like fly, but if it wasn't there the Altaria could easily get fucked by a simple taunt.
Perish Song is esp useful in Anything Goes. It can't miss and anyone who dares using an annoying Drifblim or Smeargle will get rekt ez. The effect carries over Baton Pass.
If it turns out completely useless in a fight, I can just use it as buffer damage for a Pokemon switch or just to annoy the opponent. Toxic sure is toxic mate.
Goodra is the tank, it takes hits and then returns a ton of damage back to the opponent with its array of moves. It can pretty much hit almost everything supereffectively. I use it mostly to annoy Physical attackers, I actually prefer using Garchomp to deal with Special attackers like Gardevoir,
Haxorus, Garchomp, Hydreigon and Salamence are all my ultra fast attackers. They all have a good amount of speed to outspeed most things in the game as far as gen 7 is concerned. Charge Beam may look stupid on Hydregon, but an almost guaranteed special attack increase and another move to hit superffectively foes is def the reason why it's even there. Haxorus is great for Mold Breaker, too bad it doesn't learn any steel type move I had to resort to Poison Jab + Brick Break to cover its weaknesses. Garchomp is like Goodra in the sense that it focuses on type coverage too. Salamance can be good: Double-Edge + Aerilate combo is great, I also like Tailwind, it's been useful in some fights. Too bad the only steel type move it learns sucks, but to compensate it does a buttload of STAB damage.
The only part I'm a bit sceptic about are the items. The Focus Sash on Altaria and the Salamancite on Salamance are great, but then there's just berries and the Shell Bell. Those berries did prevent the Pokemon from fainting from an ice or fairy attack every now and then during battle, so they're not totally useless, but maybe it could've been better TBH. Also these Pokemons were very fast in gen 7, but now that they're outclassed I'm thinking Dragon Dance would do well for most of them.
With this team alone I managed to get around 1400 ~ 1500 evo. It's not impressive by this site's standards, but I've never pulled it off with any other monoteam.