Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Insomnia  
Tera Type: Psychic  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Fire Blast  
- Psystrike  
- Ice Beam  

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

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Tera Type: Ground  
EVs: 252 HP / 4 Atk / 252 Def  
Lax Nature  
- Stealth Rock  
- Overheat  
- Precipice Blades  
- Roar  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Grass  
EVs: 248 HP / 208 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Brave Bird  
- Defog  
- Whirlwind  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
Tera Type: Poison  
EVs: 248 HP / 136 Def / 124 Spe  
Impish Nature  
IVs: 0 Atk  
- Foul Play  
- Toxic  
- Taunt  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
Tera Type: Ghost  
EVs: 248 HP / 76 Def / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Foul Play  
- Toxic  
- Defog  
- Oblivion Wing