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

Deoxys-Attack @ Psychium Z  
Ability: Pressure  
EVs: 4 Atk / 252 SpA / 252 Spe  
Rash Nature  
- Psycho Boost  
- Ice Beam  
- Dark Pulse  
- Superpower  

Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Insomnia  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Shadow Ball  
- Ice Beam  
- Taunt  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
- Toxic  
- Stealth Rock  
- Overheat  
- Precipice Blades  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 64 SpA / 196 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Defog  
- Recover  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 76 Def / 252 SpA / 180 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Focus Blast  
- Thunder  
- Moonblast