Groudon @ Leftovers  
Ability: Drought  
Tera Type: Water  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Spikes  
- Precipice Blades  
- Will-O-Wisp  
- Roar  

Calyrex-Shadow @ Choice Specs  
Ability: As One (Spectrier)  
Tera Type: Ghost  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Astral Barrage  
- Grass Knot  
- Psychic  
- Trick  

Arceus  
Ability: Multitype  
Tera Type: Normal  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Calm Mind  
- Recover  
- Refresh  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
Tera Type: Fairy  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Iron Head  
- Play Rough  
- Wild Charge  
- Close Combat  

Miraidon @ Choice Specs  
Ability: Hadron Engine  
Tera Type: Electric  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- U-turn  
- Electro Drift  
- Draco Meteor  
- Overheat  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
Tera Type: Fairy  
EVs: 232 HP / 44 Def / 188 SpD / 44 Spe  
Calm Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Flamethrower  
- Toxic Spikes