Diancie-Mega @ Diancite  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 24 HP / 32 Atk / 220 SpA / 16 SpD / 216 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Earth Power  
- Substitute  

Groudon @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 68 Def / 192 SpD  
Impish Nature  
- Precipice Blades  
- Stealth Rock  
- Toxic  
- Rock Tomb  

Kyogre @ Blue Orb  
Ability: Drizzle  
EVs: 248 HP / 236 Def / 24 SpD  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Scald  
- Ice Beam  
- Rest  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Grass  
EVs: 248 HP / 176 Atk / 20 Def / 56 SpD / 8 Spe  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Defog  
- Whirlwind  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
Tera Type: Dark  
EVs: 204 Def / 80 SpA / 224 Spe  
Timid Nature  
- Foul Play  
- Oblivion Wing  
- Defog  
- U-turn  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
Tera Type: Fighting  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Swords Dance  
- Close Combat  
- Behemoth Blade  
- Wild Charge