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  
- Spiky Shield

Zacian-Crowned @ Covert Cloak  
Ability: Primordial Sea  
Tera Type: Water  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Magical Torque  
- Fishious Rend  
- Nuzzle / Knock Off / Stone Axe / Spectral Thief
- Heal Order

Zacian-Crowned @ Covert Cloak  
Ability: Ice Scales  
Tera Type: Ground / Electric / Water
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Anchor Shot  
- Mortal Spin  
- Salt Cure / Spectral Thief / Worry Seed
- Heal Order

Zacian-Crowned @ Covert Cloak / Ability Shield  
Ability: Purifying Salt  
Tera Type: Fairy
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Magical Torque  
- Spectral Thief  
- Heal Order  
- U-turn