Arceus-Ghost @ Spooky Plate  
Ability: Regenerator  
Tera Type: Ghost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Take Heart  
- Judgment  
- Ingrain  
- Wrap  

Mewtwo-Mega-X @ Mirror Herb  
Ability: Opportunist  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 8 Def / 252 SpD / 252 Spe  
Hasty Nature  
- Spicy Extract  
- Close Combat  
- Gigaton Hammer  
- Poltergeist  

Eternatus @ Choice Specs  
Ability: Regenerator  
Tera Type: Poison  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Final Gambit  
- Dragon Energy  
- Volt Switch  
- Eruption  

Aegislash @ Eject Button  
Ability: Unaware  
Tera Type: Steel  
EVs: 252 HP / 252 Def / 252 SpD  
Bold Nature  
IVs: 0 Atk / 0 Spe  
- Strength Sap  
- Roost  
- Nuzzle  
- Teleport  

Ho-Oh @ Life Orb  
Ability: Magic Guard  
Shiny: Yes  
Tera Type: Fire  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Flare Blitz  
- Mortal Spin  
- Worry Seed  
- Recover  

Zacian @ Heavy-Duty Boots  
Ability: Fur Coat  
Shiny: Yes  
Tera Type: Fairy  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Spirit Shackle  
- Spirit Break  
- Knock Off  
- Strength Sap