Sceptile-Mega @ Choice Specs  
Ability: Beads of Ruin  
Shiny: Yes  
Tera Type: Fairy  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Energy  
- Seed Flare  
- Blue Flare  
- Volt Switch  

Xerneas @ Toxic Orb  
Ability: Poison Heal  
Tera Type: Fire  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
- Moonblast  
- Will-O-Wisp  
- Rapid Spin  
- Spiky Shield  

Arceus-Water @ Covert Cloak  
Ability: Fur Coat  
Shiny: Yes  
Tera Type: Dragon  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Topsy-Turvy  
- Heal Order  
- Teleport  

Groudon @ Red Orb  
Ability: Intrepid Sword  
Tera Type: Fire  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- V-create  
- Knock Off  
- Solar Beam  
- Morning Sun  

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  
- Heal Order  
- Ceaseless Edge  

Dialga-Origin @ Ability Shield  
Ability: Ice Scales  
Tera Type: Flying  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Anchor Shot  
- Core Enforcer  
- Spectral Thief  
- Heal Order