Heatran @ Custap Berry  
Ability: Flash Fire  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Endure  
- Flash Cannon  
- Earth Power  
- Overheat  

Hariyama (F) @ Toxic Orb  
Ability: Guts  
Shiny: Yes  
EVs: 92 HP / 24 Atk / 136 Def / 252 SpD / 4 Spe  
Adamant Nature  
- Fake Out  
- Close Combat  
- Ice Punch  
- Facade  

Shaymin @ Leftovers
Ability: Natural Cure  
EVs: 252 HP / 4 Atk / 252 Spe  
Jolly Nature  
- Protect  
- Substitute  
- Leech Seed  
- Bullet Seed