Mewtwo-Mega-X @ Life Orb  
Ability: Magic Guard  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Lumina Crash  
- High Jump Kick  
- Steel Beam  
- Strength Sap  

Eternatus @ Draco Plate  
Ability: Mold Breaker  
Tera Type: Poison  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Energy  
- Torch Song  
- Toxic Spikes  
- Strength Sap  

Chansey (F) @ Eviolite  
Ability: Imposter  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Ruination  
- Rapid Spin  
- Mean Look  
- Roost  

Arceus-Fairy @ Covert Cloak  
Ability: Ice Scales  
Tera Type: Fairy  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Glare  
- Spikes  
- Roost  

Steelix-Mega @ Assault Vest  
Ability: Regenerator  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Gigaton Hammer  
- Stone Axe  
- Mortal Spin  
- U-turn  

Miraidon @ Covert Cloak  
Ability: Fur Coat  
Tera Type: Electric  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunder Cage  
- Mortal Spin  
- Torch Song  
- Strength Sap