Gyarados-Mega @ Toxic Orb  
Ability: Poison Heal  
Tera Type: Water  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Fishious Rend  
- Ceaseless Edge  
- Glare / Will-o-Wisp 
- Spiky Shield

Arceus-Ghost @ Covert Cloak / Ability Shield  
Ability: Fur Coat  
Tera Type: Water  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
- Infernal Parade  
- Heal Order
- Core Enforcer / Worry Seed  
- Knock Off / Spectral Thief / Topsy-Turvy / Rapid Spin  

Arceus-Ghost @ Spooky Plate  
Ability: Fur Coat  
Tera Type: Ghost / Water  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold / Modest Nature  
IVs: 0 Atk  
- Judgment  
- Secret Sword  
- Tail Glow  
- Heal Order