Metagross-Mega @ Leftovers  
Ability: No Guard  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Dark Void  
- Sheer Cold  
- Baton Pass  

Rayquaza-Mega @ Life Orb  
Ability: Mold Breaker  
EVs: 64 HP / 48 Def / 252 SpA / 8 SpD / 136 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Chatter  
- Spore  
- Spikes  

Latios-Mega (M) @ Soul Dew  
Ability: Mold Breaker  
EVs: 248 HP / 252 SpA / 4 SpD / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Spore  
- Quiver Dance  
- Spacial Rend  
- Psystrike  

Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Parting Shot  
- Aromatherapy  
- Defog  
- Roost  

Gyarados-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Pursuit  
- Trick-or-Treat  
- Knock Off  
- Ice Shard  

Mewtwo-Mega-X @ Choice Scarf  
Ability: Arena Trap  
EVs: 252 Atk / 84 Def / 172 Spe  
Naughty Nature  
- Surf  
- Bolt Strike  
- Dragon Ascent  
- Close Combat