Giratina @ Leftovers  
Ability: Prankster  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Misty Terrain  
- Curse  
- Encore  
- Roost  

Latios-Mega (M) @ Soul Dew  
Ability: Protean  
EVs: 252 SpA / 144 SpD / 112 Spe  
Modest Nature  
IVs: 0 Atk  
- Flash Cannon  
- Boomburst  
- Freeze-Dry  
- Moonblast  

Ferrothorn @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- Stealth Rock  
- Aromatherapy  
- Heal Order  
- U-turn  

Rayquaza-Mega @ Draco Plate  
Ability: Mold Breaker  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Judgment  
- Shell Smash  
- King's Shield  

Tyranitar-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 SpD  
Adamant Nature  
- Water Shuriken  
- Ice Shard  
- Beat Up  
- Pursuit  

Xerneas @ Leftovers  
Ability: Wonder Guard  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Moonblast  
- Defog