Mewtwo-Mega-Y @ Leftovers  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Fissure  
- Photon Geyser  
- Spore  
- Megahorn  

Yveltal @ Leftovers  
Ability: Arena Trap  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Beat Up  
- Will-O-Wisp  
- Taunt  
- Strength Sap  

Slaking @ Leppa Berry  
Ability: Harvest  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Extreme Evoboost  
- Searing Sunraze Smash  
- Baton Pass  
- Shore Up  

Steelix-Mega @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Haze  
- Will-O-Wisp  
- Thousand Waves  
- Shore Up  

Meloetta @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Defog  
- Baton Pass  
- Spectral Thief  
- Shore Up  

Greninja-Ash (M) @ Pixie Plate  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Taunt  
- Shell Smash  
- Photon Geyser  
- Judgment