Groudon-Primal @ Ground Memory  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Multi-Attack  
- Roost  

Audino-Mega @ Focus Sash  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Stealth Rock  
- Recover  
- Sticky Web  
- Baton Pass  

Necrozma-Dawn-Wings @ Lunalium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Secret Sword  
- Roost  
- Shell Smash  
- Moongeist Beam  

Groudon-Primal @ Ground Memory  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Pursuit  
- Multi-Attack  

Steelix-Mega @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Encore  
- Haze  
- Defog  
- Recover  

Mewtwo-Mega-X @ Choice Band  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Photon Geyser  
- Ice Shard  
- Shadow Sneak  
- Sunsteel Strike