Eternatus @ Life Orb  
Ability: Pressure  
Tera Type: Poison  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Sludge Bomb  
- Fire Blast  
- Recover  

Lunala @ Covert Cloak  
Ability: Shadow Shield  
Tera Type: Psychic  
EVs: 248 HP / 236 Def / 24 Spe  
Bold Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Future Sight  
- Teleport  
- Moonlight  

Groudon @ Leftovers  
Ability: Drought  
Tera Type: Ground  
EVs: 232 HP / 252 Atk / 24 Spe  
Adamant Nature  
- Precipice Blades  
- Heat Crash  
- Swords Dance  
- Stealth Rock  

Regieleki @ Altarianite  
Ability: Transistor  
Tera Type: Electric  
EVs: 56 HP / 252 Atk / 8 Def / 92 SpA / 100 Spe  
Naughty Nature  
- Rapid Spin  
- Volt Switch  
- Extreme Speed  
- Supercell Slam  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Fire  
EVs: 248 HP / 196 Def / 64 Spe  
Impish Nature  
- Sacred Fire  
- Earthquake  
- Recover  
- Whirlwind  

Magearna @ Latiasite  
Ability: Soul-Heart  
Tera Type: Steel  
EVs: 252 HP / 120 Def / 136 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Volt Switch  
- Ice Beam  
- Pain Split  
- Spikes