Mewtwo-Mega-X @ Life Orb  
Ability: Speed Boost  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Close Combat  
- Photon Geyser  
- Strength Sap  
- Swords Dance  

Miraidon @ Choice Specs  
Ability: Hadron Engine  
Tera Type: Dragon  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Rising Voltage  
- U-turn  
- Dragon Energy  
- Clanging Scales  

Dialga-Origin @ Covert Cloak  
Ability: Ice Scales  
Tera Type: Dark  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Core Enforcer  
- Spectral Thief  
- Heal Order  
- Teleport  

Lunala @ Ability Shield  
Ability: Fur Coat  
Tera Type: Water  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
- Heal Order  
- Infernal Parade  
- Rapid Spin  
- Nuzzle  

Groudon @ Red Orb  
Ability: Intrepid Sword  
Tera Type: Fire  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- V-create  
- Morning Sun  
- Knock Off  
- Solar Beam  

Yveltal @ Heavy-Duty Boots  
Ability: Prankster  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Haze  
- Heal Order  
- Ceaseless Edge  
- Parting Shot