Reuniclus @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 208 Def / 48 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Psyshock  
- Thunder  
- Recover  

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Scald  
- Knock Off  
- Toxic Spikes  
- Recover  

Skarmory @ Shed Shell  
Ability: Sturdy  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Spikes  
- Whirlwind  
- Counter  
- Roost  

Chansey @ Eviolite  
Ability: Natural Cure  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Stealth Rock  
- Toxic  
- Seismic Toss  
- Soft-Boiled  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform  

Weezing-Galar @ Black Sludge  
Ability: Neutralizing Gas  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Strange Steam  
- Will-O-Wisp  
- Defog  
- Aromatherapy 

Note: It can run Sludge Bomb over Aromatherapy