Pheromosa @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Fissure  
- Sheer Cold  
- Sunsteel Strike  
- Magma Storm  

Blissey (F) @ Figy Berry  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 SpD / 252 Spe  
Hasty Nature  
IVs: 0 Def  
- Slack Off  
- Spikes  
- Spectral Thief  
- Baton Pass  

Slowbro-Mega @ Darkinium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Parting Shot  
- Defog  
- Lava Plume  

Mewtwo-Mega-X @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Sunsteel Strike  
- Photon Geyser  
- Shell Smash  
- Ice Shard  

Steelix-Mega @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Haze  
- Thousand Waves  
- Recover  
- Stealth Rock  

Gyarados-Mega @ Fairy Memory  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Power Trip  
- Multi-Attack