Thundurus (M) @ Covert Cloak  
Ability: Prankster  
Tera Type: Electric  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
IVs: 0 Atk  
- Wildbolt Storm  
- Eerie Impulse  
- Thunder Wave  
- Taunt  

Baxcalibur @ Assault Vest  
Ability: Thermal Exchange  
Tera Type: Dragon  
EVs: 232 HP / 96 Atk / 84 Def / 96 Spe  
Adamant Nature  
- Scale Shot  
- Icicle Crash  
- Iron Head  
- Ice Shard  

Volcanion @ Assault Vest  
Ability: Water Absorb  
Tera Type: Fire  
EVs: 248 HP / 36 Def / 148 SpA / 76 SpD
Modest Nature  
IVs: 0 Atk  
- Fire Blast  
- Heat Wave  
- Steam Eruption  
- Earth Power  

Ogerpon-Cornerstone (F) @ Cornerstone Mask  
Ability: Sturdy  
Tera Type: Rock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Ivy Cudgel  
- Power Whip  
- Follow Me  
- Spiky Shield