Grimmsnarl @ Light Clay  
Ability: Prankster  
Tera Type: Steel  
EVs: 248 HP / 180 Def / 80 SpD  
Impish Nature  
- Light Screen  
- Reflect  
- Play Rough  
- Thunder Wave  

Mewtwo @ Heavy-Duty Boots  
Ability: Pressure  
Tera Type: Steel  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Psystrike  
- Grass Knot  
- Earth Power  

Koraidon @ Loaded Dice  
Ability: Orichalcum Pulse  
Tera Type: Fighting  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Scale Shot  
- Flare Blitz  
- Low Kick  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
Tera Type: Ground  
EVs: 132 HP / 252 Atk / 124 Spe  
Adamant Nature  
- Earthquake  
- Stone Edge  
- Dragon Dance  
- Taunt  

Eternatus @ Life Orb  
Ability: Pressure  
Tera Type: Dragon  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Dynamax Cannon  
- Sludge Bomb  
- Fire Blast  
- Recover  

Calyrex-Ice @ Heavy-Duty Boots  
Ability: As One (Glastrier)  
Tera Type: Fire  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
- Trick Room  
- Swords Dance  
- Glacial Lance  
- High Horsepower