Deoxys-Attack @ Leftovers  
Ability: Wonder Guard  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Future Sight  
- Substitute  
- Taunt  
- Baton Pass  

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

Slaking @ Silk Scarf  
Ability: Shadow Tag  
EVs: 252 Atk / 252 Def / 4 SpD  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- Low Kick  
- Stealth Rock  

Gyarados-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 240 HP / 252 Atk / 16 Spe  
Adamant Nature  
- Pursuit  
- Beat Up  
- Water Shuriken  
- King's Shield  

Audino-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Aromatherapy  
- Defog  
- Parting Shot  

Rayquaza-Mega @ Shed Shell  
Ability: Mold Breaker  
EVs: 80 HP / 48 Def / 252 SpA / 4 SpD / 124 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Chatter  
- Spore  
- Spikes