Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 8 Def / 252 SpD  
Adamant Nature  
IVs: 29 Spe  
- Precipice Blades  
- Toxic  
- Dragon Tail  
- Stealth Rock  

Arceus @ Lum Berry  
Ability: Multitype  
EVs: 240 HP / 252 Atk / 16 Spe  
Adamant Nature  
- Swords Dance  
- Extreme Speed  
- Earthquake  
- Recover  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 48 HP / 132 Def / 248 SpA / 80 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Focus Blast  
- Substitute  

Rayquaza-Mega @ Choice Band  
Ability: Delta Stream  
EVs: 12 HP / 252 Atk / 92 Def / 152 Spe  
Jolly Nature  
- Dragon Ascent  
- Waterfall  
- V-create  
- Extreme Speed  

Arceus-Ghost @ Spooky Plate  
Ability: Multitype  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Shadow Force  
- Brick Break  
- Shadow Claw  

Arceus @ Lum Berry  
Ability: Multitype  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Extreme Speed  
- Earthquake  
- Magic Coat