Latias (F) @ Lum Berry  
Ability: Levitate  
EVs: 252 HP / 204 Def / 40 SpD  
Calm Nature  
IVs: 28 HP / 8 Atk / 28 Def / 7 SpA / 30 SpD / 29 Spe  
- Thunder Wave  
- Charm  
- Mud-Slap  
- Recover  

Suicune @ Chesto Berry  
Ability: Pressure  
EVs: 252 HP / 252 Def / 4 SpD  
Calm Nature  
IVs: 25 HP / 16 Atk / 20 Def / 29 SpA / 28 SpD / 7 Spe  
- Surf  
- Calm Mind  
- Rest  
- Substitute  

Dragonite @ Leftovers  
Ability: Inner Focus  
EVs: 236 HP / 252 Atk / 20 Spe  
Adamant Nature  
IVs: 29 Def / 2 SpA / 27 SpD / 29 Spe  
- Aerial Ace  
- Dragon Dance  
- Earthquake  
- Substitute