Snorlax @ Choice Band  
Ability: Thick Fat  
EVs: 4 HP / 252 Atk / 252 SpD  
Adamant Nature  
- Giga Impact  
- Counter  
- Crunch  
- Earthquake  

Suicune @ Sitrus Berry  
Ability: Pressure  
EVs: 252 HP / 36 SpA / 4 SpD / 216 Spe  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Calm Mind  
- Surf  
- Protect  

Rotom-Frost @ Choice Scarf  
Ability: Levitate  
EVs: 208 Def / 80 SpA / 220 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunderbolt  
- Blizzard  
- Trick  
- Shadow Ball