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

Latios-Mega (M) @ Soul Dew  
Ability: Protean  
EVs: 16 HP / 252 SpA / 4 SpD / 236 Spe  
Modest Nature  
IVs: 0 Atk  
- Freeze-Dry  
- Sludge Bomb  
- Searing Shot  
- Secret Sword  

Groudon-Primal @ Choice Band  
Ability: Mold Breaker  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Thousand Arrows  
- V-create  
- U-turn  
- Ice Shard  

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

Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Chatter  
- Defog  
- Baton Pass  

Manectric-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Taunt  
- Spikes  
- Parting Shot  
- Roost