Groudon-Primal @ Focus Sash  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Bonemerang  
- Sunsteel Strike  
- Ice Punch  

Aegislash @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Moonlight  
- Conversion  
- King's Shield  
- Will-O-Wisp  

Mewtwo-Mega-X @ Shed Shell  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Photon Geyser  
- Sunsteel Strike  
- Close Combat  
- Extreme Speed  

Meloetta @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Spectral Thief  
- Baton Pass  
- Defog  
- Stealth Rock  

Kartana @ Focus Sash  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Sunsteel Strike  
- Fire Lash  
- Toxic  

Zygarde-Complete @ Shed Shell  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Core Enforcer  
- Haze  
- Roost  
- Spikes