Latios @ Lum Berry  
Ability: Levitate  
Level: 50  
EVs: 12 HP / 252 SpA / 244 Spe  
Modest Nature  
IVs: 20 Atk / 16 Def / 24 SpD / 25 Spe  
- Psychic  
- Thunderbolt  
- Dragon Claw  
- Calm Mind  

Metagross @ Choice Band  
Ability: Clear Body  
Level: 50  
EVs: 28 HP / 100 Atk / 156 Def / 108 Spe  
- Earthquake  
- Explosion  
- Meteor Mash  
- Shadow Ball  

Swampert @ Leftovers  
Ability: Torrent  
Level: 50  
EVs: 156 HP / 200 Atk / 28 SpA  
IVs: 16 Def / 29 Spe  
- Earthquake  
- Counter  
- Surf  
- Ice Ball