Slaking @ Light Clay  
Ability: Adaptability  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Explosion  
- Light Screen  
- Reflect  
- Rapid Spin  

Mewtwo-Mega-Y @ Focus Sash  
Ability: Mold Breaker  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Spore  
- Shell Smash  
- Seed Flare  
- Stored Power  

Toxapex @ Black Sludge  
Ability: Prankster  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Topsy-Turvy  
- Recover  
- Toxic  
- U-turn  

Regigigas @ Life Orb  
Ability: Triage  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Explosion  
- Drain Punch  
- Spectral Thief  
- Return  

Deoxys-Attack @ Focus Sash  
Ability: Dazzling  
Shiny: Yes  
- Spore  
- Shell Smash  
- Stored Power  
- Power Trip  

Arceus @ Choice Scarf  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Final Gambit  
- Aromatherapy  
- Recover  
- Lunar Dance