Thundurus-Therian (M) @ Leftovers  
Ability: Volt Absorb  
EVs: 104 HP / 252 SpA / 152 Spe  
Modest Nature  
IVs: 0 Atk / 30 Def  
- Agility  
- Thunderbolt  
- Focus Blast  
- Hidden Power [Ice]  

Volcarona @ Sitrus Berry  
Ability: Flame Body  
EVs: 4 HP / 60 Def / 216 SpA / 228 Spe  
Modest Nature  
IVs: 1 Atk / 30 SpA / 30 SpD  
- Quiver Dance  
- Fire Blast  
- Giga Drain  
- Hidden Power [Ground]  

Garchomp @ Rocky Helmet  
Ability: Rough Skin  
EVs: 232 HP / 24 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Earthquake  
- Outrage  
- Stealth Rock  

Serperior @ Light Clay  
Ability: Contrary  
EVs: 208 HP / 44 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Light Screen  
- Reflect  
- Leaf Storm  
- Taunt  

Cloyster @ Focus Sash  
Ability: Skill Link  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Icicle Spear  
- Toxic Spikes  
- Rapid Spin  

Diancie-Mega @ Diancite  
Ability: Clear Body  
EVs: 172 Atk / 84 SpA / 252 Spe  
Naive Nature  
- Diamond Storm  
- Moonblast  
- Explosion  
- Protect