Groudon-Primal @ Red Orb  
Ability: Drought  
EVs: 252 HP / 36 Def / 220 SpD  
Careful Nature  
- Stealth Rock  
- Precipice Blades  
- Roar  
- Stone Edge  

Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Dragon Ascent  
- Extreme Speed  
- Earthquake  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Close Combat  
- Pursuit  
- Shadow Sneak  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 168 Def / 252 SpA / 88 Spe  
Modest Nature  
- Geomancy  
- Moonblast  
- Thunder  
- Focus Blast  

Arceus @ Chople Berry  
Ability: Multitype  
EVs: 236 HP / 252 Atk  
Naughty Nature  
- Swords Dance  
- Extreme Speed  
- Shadow Claw  
- Ice Beam  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 28 HP / 220 Atk / 8 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Photon Geyser  
- Earthquake  
- Stone Edge