Garchomp @ Custap Berry  
Ability: Rough Skin  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Outrage  
- Earthquake  
- Dual Chop  
- Endure  

Haxorus @ Choice Scarf  
Ability: Unnerve  
EVs: 8 HP / 252 Atk / 8 Def / 240 Spe  
Jolly Nature  
- Earthquake  
- Iron Tail  
- Superpower  
- Outrage  

Latios @ Haban Berry  
Ability: Levitate  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Draco Meteor  
- Psyshock  
- Ice Beam  
- Psychic