Volcarona @ Psychium Z  
Ability: Flame Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Quiver Dance  
- Psychic  
- Flamethrower  
- Hidden Power [Ground]  

Dragonite @ Leftovers  
Ability: Multiscale  
EVs: 248 HP / 44 Atk / 216 Spe  
Adamant Nature  
- Roost  
- Earthquake  
- Ice Punch  
- Dragon Dance  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 248 HP / 8 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Endeavor  
- Stealth Rock  
- Moonblast  
- Substitute  

Serperior @ Light Clay  
Ability: Contrary  
EVs: 252 HP / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Reflect  
- Light Screen  
- Glare  
- Taunt  

Scolipede @ Focus Sash  
Ability: Speed Boost  
EVs: 248 HP / 8 Atk / 252 Spe  
Jolly Nature  
- Toxic Spikes  
- Spikes  
- Megahorn  
- Endeavor  

Magearna @ Iapapa Berry  
Ability: Soul-Heart  
EVs: 252 HP / 40 SpA / 216 Spe  
Modest Nature  
IVs: 0 Atk  
- Shift Gear  
- Ice Beam  
- Thunderbolt  
- Calm Mind