Tyranitar @ Weakness Policy  
Ability: Sand Stream  
Tera Type: Ghost  
EVs: 252 HP / 164 Atk / 92 SpD  
Brave Nature  
IVs: 0 Spe  
- Rock Slide  
- Lash Out  
- Protect  
- High Horsepower  

Camerupt-Mega @ Cameruptite  
Ability: Solid Rock  
Tera Type: Fire  
EVs: 248 HP / 252 SpA / 8 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Heat Wave  
- Ancient Power  
- Earth Power  
- Protect  

Aron @ Berry Juice  
Ability: Sturdy  
Level: 1  
Tera Type: Ghost  
EVs: 1 HP  
IVs: 0 HP  
- Endeavor  
- Protect  
- Sandstorm  
- Bulldoze  

Porygon2 @ Eviolite  
Ability: Trace  
Tera Type: Ghost  
EVs: 252 HP / 4 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Teleport  
- Ice Beam  
- Recover  

Diancie @ Weakness Policy  
Ability: Clear Body  
Tera Type: Grass  
EVs: 248 HP / 8 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Protect  
- Diamond Storm  
- Body Press  
- Trick Room  

Grimmsnarl @ Light Clay  
Ability: Prankster  
Tera Type: Steel  
EVs: 252 HP / 252 SpD / 4 Spe  
Calm Nature  
IVs: 0 Atk  
- Parting Shot  
- Light Screen  
- Reflect  
- Taunt