Klefki @ Light Clay  
Ability: Prankster  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Reflect  
- Light Screen  
- Spikes  
- Thunder Wave  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 Atk / 88 SpD / 168 Spe  
Adamant Nature  
- Swords Dance  
- Rock Polish  
- Precipice Blades  
- Stone Edge  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Stealth Rock  
- Photon Geyser  
- Heat Wave  
- Dragon Pulse  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Ice Beam  
- Recover  

Yveltal @ Metronome  
Ability: Dark Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
- Dark Pulse  
- Oblivion Wing  
- Sucker Punch  
- Taunt  

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