Diancie-Mega @ Diancite  
Ability: Clear Body  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Endeavor  
- Heal Bell  

Celesteela @ Leftovers  
Ability: Beast Boost  
EVs: 252 HP / 232 SpD / 24 Spe  
Sassy Nature  
- Leech Seed  
- Heavy Slam  
- Flamethrower  
- Protect  

Amoonguss @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 176 Def / 64 SpD / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Spore  
- Giga Drain  
- Clear Smog  
- Hidden Power [Fire]  

Moltres @ Heavy-Duty Boots  
Ability: Flame Body  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hurricane  
- Fire Blast  
- Defog  
- Roost  

Hippowdon @ Leftovers  
Ability: Sand Stream  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Earthquake  
- Stealth Rock  
- Slack Off  
- Whirlwind  

Rotom-Wash @ Electrium Z  
Ability: Levitate  
EVs: 36 HP / 252 SpA / 220 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunder  
- Hydro Pump  
- Volt Switch  
- Pain Split