Ho-Oh @ Choice Scarf  
Ability: Regenerator  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Brave Bird  
- Sacred Fire  
- Toxic  
- Whirlwind  

Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 HP / 4 Atk / 252 Spe  
Jolly Nature  
- Low Kick  
- Taunt  
- Earthquake  
- Ice Punch  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 232 Def / 4 SpD / 20 Spe  
Bold Nature  
IVs: 0 Atk  
- Recover  
- Judgment  
- Ice Beam  
- Stealth Rock  

Excadrill @ Custap Berry  
Ability: Mold Breaker  
EVs: 220 HP / 252 Def / 36 Spe  
Impish Nature  
- Brick Break  
- Bulldoze  
- Rapid Spin  
- Stealth Rock  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 196 SpA / 60 SpD / 252 Spe  
Hasty Nature  
- Roar  
- Eruption  
- Precipice Blades  
- Rock Tomb  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Rest  
- Ingrain  
- Geomancy