Eternatus @ Life Orb  
Ability: Magic Guard  
Tera Type: Poison  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Torch Song  
- Dragon Energy  
- Shell Side Arm  
- Strength Sap  

Magearna @ Covert Cloak  
Ability: Well-Baked Body  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Quiet Nature  
- Circle Throw  
- Doom Desire  
- Nasty Plot  
- Strength Sap  

Steelix-Mega @ Assault Vest  
Ability: Regenerator  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Gigaton Hammer  
- Salt Cure  
- Stone Axe  
- U-turn  

Audino-Mega @ Rocky Helmet  
Ability: Fur Coat  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Will-O-Wisp  
- Strength Sap  
- Haze  

Ho-Oh @ Heavy-Duty Boots  
Ability: Magic Bounce  
Tera Type: Fire  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Knock Off  
- Mortal Spin  
- V-create  
- Strength Sap  

Arceus-Ghost @ Spooky Plate  
Ability: Mold Breaker  
Tera Type: Ghost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Whirlwind  
- Spikes  
- Judgment  
- Strength Sap