Metagross @ Choice Band  
Ability: Clear Body  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Meteor Mash  
- Earthquake  
- Shadow Ball  
- Explosion  

Latias (F) @ Lum Berry  
Ability: Levitate  
EVs: 4 HP / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Psychic  
- Dragon Claw  
- Thunderbolt  
- Ice Beam  

Suicune @ Chesto Berry  
Ability: Pressure  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Surf  
- Ice Beam  
- Calm Mind  
- Rest