Big Imposter (Chansey) (F) @ Eviolite  
Ability: Imposter  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Haze  
- Block  
- Wish  
- Heal Bell  

Big Imposter (Blissey) (F) @ Assault Vest  
Ability: Regenerator  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- U-turn  
- Mortal Spin  
- Dragon Tail  
- Stone Axe  

Audino-Mega @ Covert Cloak  
Ability: Fur Coat  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Bold Nature  
IVs: 0 Atk / 0 Spe  
- Moonblast  
- Haze  
- Strength Sap  
- Salt Cure  

Giratina @ Assault Vest  
Ability: Regenerator  
Tera Type: Ghost  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
IVs: 0 SpA  
- Stone Axe  
- Dragon Tail  
- Knock Off  
- U-turn  

Dialga-Origin @ Adamant Crystal  
Ability: Wandering Spirit  
Tera Type: Steel  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Doom Desire  
- Ruination  
- Thunder Cage  
- Strength Sap  

Arceus-Fire @ Heavy-Duty Boots  
Ability: Fur Coat  
Tera Type: Poison  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Take Heart  
- Lava Plume  
- Thunder Cage  
- Strength Sap