Pidgeot-Mega @ Leftovers  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Chatter  
- Gastro Acid  

Xerneas @ Leftovers  
Ability: Magic Bounce  
EVs: 252 Def / 252 SpA / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Taunt  
- Spikes  
- Roost  

Rayquaza-Mega @ Sky Plate  
Ability: Gale Wings  
EVs: 248 HP / 8 Def / 252 SpA  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Chatter  
- Spikes  
- Taunt  

Sableye-Mega @ Flame Orb  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Psycho Shift  
- Parting Shot  
- Roost  
- Magic Coat  

Xerneas @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Parting Shot  
- Defog  
- Roost  
- Moonblast  

Rayquaza-Mega @ Sky Plate  
Ability: Mold Breaker  
EVs: 208 HP / 252 SpA / 48 Spe  
Modest Nature  
IVs: 0 Atk  
- Quiver Dance  
- Dark Void  
- Substitute  
- Oblivion Wing