Diancie @ Covert Cloak  
Ability: Sand Stream  
Tera Type: Rock  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Pain Split  
- Spikes  
- Topsy-Turvy  
- Moonblast  

Heatran @ Assault Vest  
Ability: Regenerator  
Tera Type: Fire  
EVs: 252 HP / 252 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk / 0 Spe  
- U-turn  
- Nuzzle  
- Stone Axe  
- Dragon Tail  

Swampert-Mega @ Covert Cloak  
Ability: Fur Coat  
Tera Type: Water  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Flip Turn  
- Earthquake  
- Mortal Spin  
- Shore Up  

Garchomp-Mega @ Choice Band  
Ability: Regenerator  
Tera Type: Dragon  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- U-turn  
- Earthquake  
- Glaive Rush  
- Mortal Spin  

Arceus-Ghost @ Spooky Plate  
Ability: Magic Guard  
Tera Type: Ghost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Salt Cure  
- Spikes  
- Shore Up  

Magearna @ Rocky Helmet  
Ability: Magic Guard  
Tera Type: Steel  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Revelation Dance  
- Moonblast  
- Burning Bulwark  
- Strength Sap