Heatran @ Air Balloon  
Ability: Flash Fire  
EVs: 12 HP / 216 Def / 64 SpA / 216 Spe  
Modest Nature  
- Iron Defense  
- Body Press  
- Eruption  
- Taunt  

Aegislash @ Weakness Policy  
Ability: Stance Change  
EVs: 252 HP / 68 Def / 76 SpA / 112 SpD  
Quiet Nature  
IVs: 0 Spe  
- Shadow Ball  
- Shadow Sneak  
- King's Shield  
- Metal Sound  

Magnezone @ Custap Berry  
Ability: Sturdy  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
- Thunderbolt  
- Flash Cannon  
- Endure  
- Mirror Coat