Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Insomnia  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Fire Blast  
- Psystrike  
- Ice Beam  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Stealth Rock  
- Roar  
- Precipice Blades  
- Lava Plume  

Tapu Lele @ Terrain Extender  
Ability: Psychic Surge  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Moonblast  
- Taunt  
- Nature's Madness  

Magearna @ Normalium Z  
Ability: Soul-Heart  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Volt Switch  
- Heart Swap  
- Heal Bell  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 32 HP / 236 Atk / 64 Def / 176 Spe  
Adamant Nature  
- Liquidation  
- Earthquake  
- Ice Beam  
- Thunder  

Arceus-Dragon @ Draco Plate  
Ability: Multitype  
EVs: 248 HP / 160 Def / 4 SpA / 96 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Defog  
- Recover  
- Toxic