Altaria @ Heavy-Duty Boots  
Ability: Natural Cure  
Tera Type: Steel/Poison/Water/Ghost  
EVs: 252 HP / 4 Def / 252 SpD
Careful/Calm Nature  
IVs: 31/0 Atk  
- Fire Spin  
- Perish Song  
- Earthquake/Haze/Defog/Will-O-Wisp/STAB
- Roost

Muk-Alola @ Heavy-Duty Boots  
Ability: Poison Touch  
Tera Type: Water/Flying  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Drain Punch/Poison Jab/Taunt/Thief
- Knock Off  
- Rest  
- Protect

Chansey @ Eviolite  
Ability: Natural Cure  
Tera Type: Dark/Steel  
EVs: 4 HP / 252 Def / 252 SpD or 252 hp / 4 Def / 252 Spdef
Bold Nature  
IVs: 0 Atk  
- Stealth Rock/Calm Mind 
- Seismic Toss  
- Soft-Boiled  
- Heal Bell/ Shadow ball