Gardevoir-Mega @ Gardevoirite  
Ability: Trace  
EVs: 228 HP / 136 Def / 144 SpA  
Quiet Nature  
IVs: 0 Atk  
- Hyper Voice  
- Psyshock  
- Trick Room  
- Protect  

Diancie @ Stone Plate  
Ability: Clear Body  
EVs: 252 HP / 252 Atk / 4 SpA  
Brave Nature  
IVs: 1 Spe  
- Diamond Storm  
- Earth Power  
- Trick Room  
- Protect  

Heatran @ Safety Goggles  
Ability: Flash Fire  
EVs: 248 HP / 4 Def / 252 SpA / 4 SpD  
Quiet Nature  
IVs: 0 Atk / 1 Spe  
- Eruption  
- Heat Wave  
- Earth Power  
- Protect  

Amoonguss @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 172 Def / 84 SpD  
Relaxed Nature  
IVs: 0 Atk / 1 Spe  
- Energy Ball  
- Rage Powder  
- Spore  
- Protect  

Gyarados @ Choice Band  
Ability: Intimidate  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 1 Spe  
- Waterfall  
- Double-Edge  
- Earthquake  
- Sleep Talk  

Talonflame @ Choice Band  
Ability: Gale Wings  
EVs: 252 HP / 252 Atk / 4 Spe  
Adamant Nature  
- Brave Bird  
- Flare Blitz  
- U-turn  
- Sleep Talk