Mewtwo-Mega-Y (F) @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Precipice Blades  
- Photon Geyser  
- Light of Ruin  
- Stealth Rock  

Gyarados-Mega (F) @ Safety Goggles  
Ability: Unaware  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Impish Nature  
- Spectral Thief  
- Recover  
- Knock Off  
- Baton Pass  

Shedinja (F) @ Lum Berry  
Ability: Sturdy  
Shiny: Yes  
EVs: 252 Atk / 252 SpA  
Lonely Nature  
IVs: 0 Def / 0 SpD / 0 Spe  
- Endeavor  
- Baneful Bunker  
- Ice Shard  
- Soak  

Aegislash (F) @ Safety Goggles  
Ability: Levitate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Spectral Thief  
- U-turn  
- Heal Order  
- Defog  

Rayquaza-Mega (F) @ Life Orb  
Ability: Aerilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Fake Out  
- Extreme Speed  
- Boomburst  
- Precipice Blades  

Groudon (F) @ Red Orb  
Ability: Electric Surge  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Precipice Blades  
- V-create  
- Plasma Fists  
- Shell Smash