Volcarona @ Fire Gem  
Ability: Flame Body  
EVs: 248 HP / 44 Def / 36 SpA / 44 SpD / 136 Spe  
Modest Nature  
IVs: 0 Atk  
- Overheat  
- Bug Buzz  
- Quiver Dance  
- Will-O-Wisp  

Magnezone @ Choice Specs  
Ability: Sturdy  
EVs: 120 HP / 252 SpA / 136 Spe  
Modest Nature  
IVs: 0 Atk / 30 Def  
- Thunderbolt  
- Flash Cannon  
- Hyper Beam  
- Hidden Power [Ice]  

Donphan @ Choice Band  
Ability: Sturdy  
EVs: 148 HP / 252 Atk / 108 Spe  
Adamant Nature  
- Earthquake  
- Ice Shard  
- Superpower  
- Rock Slide