Latios @ Lum Berry
Ability: Levitate
EVs: 6 HP / 252 SpA / 252 Spe  
Modest Nature
- Psychic
- Dragon Claw
- Thunderbolt
- Surf

Snorlax (M) @ Chesto Berry
Ability: Thick Fat
EVs: 232 HP / 252 Def / 20 SpD / 4 Spe  
Careful Nature
- Yawn
- Earthquake
- Shadow Ball
- Rest

Suicune @ Leftovers
Ability: Pressure
EVs: 236 HP / 146 SpA / 128 Spe 
Bold Nature
IVs: 14 Atk / 30 Def / 30 Spe  
- Surf
- Ice Beam
- Calm Mind
- Hidden Power [Electric]