Gyarados-Mega @ Covert Cloak  
Ability: Magic Bounce  
Tera Type: Water  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Heal Order  
- Fishious Rend  
- Knock Off  
- Victory Dance  

Giratina @ Leftovers  
Ability: Prankster  
Tera Type: Steel  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Parting Shot  
- Heal Bell  
- Haze  
- Heal Order  

Groudon @ Red Orb  
Ability: Dauntless Shield  
Tera Type: Normal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Relaxed Nature  
- Bitter Blade  
- Solar Beam  
- Mortal Spin  
- Heal Order  

Dialga-Origin @ Assault Vest  
Ability: Regenerator  
Tera Type: Flying  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Ceaseless Edge  
- Core Enforcer  
- Nuzzle  

Audino-Mega @ Toxic Orb  
Ability: Poison Heal  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Baneful Bunker  
- Moonblast  
- Parting Shot  
- Court Change  

Scizor-Mega @ Leftovers  
Ability: Well-Baked Body  
Tera Type: Bug  
- Anchor Shot  
- Spectral Thief  
- Rapid Spin  
- Heal Order