Slaking @ Lum Berry  
Ability: Pure Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Extreme Speed  
- Sunsteel Strike  
- Pursuit  
- Spikes  

Mewtwo-Mega-Y @ Focus Sash  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Moongeist Beam  
- Photon Geyser  
- Spore  
- Shell Smash  

Groudon-Primal @ Safety Goggles  
Ability: Pure Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Bonemerang  
- Sunsteel Strike  
- Ice Shard  
- Extreme Evoboost  

Yveltal @ Safety Goggles  
Ability: Pure Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Pursuit  
- Sunsteel Strike  
- Spectral Thief  
- Close Combat  

Scizor-Mega @ Leftovers  
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Strength Sap  
- Defog  
- U-turn  
- Taunt  

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 248 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Heal Order  
- Glare  
- Spectral Thief  
- Taunt