Giratina @ Griseous Orb  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 120 Spe  
Sassy Nature  
- Core Enforcer  
- Skill Swap  
- U-turn  
- Recover  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
- Facade  
- Knock Off  
- Spore  
- Shift Gear  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Facade  
- Core Enforcer  
- Imprison  
- Shell Smash  

Rayquaza-Mega @ Sky Plate  
Ability: Aerilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Extreme Speed  
- Boomburst  
- Core Enforcer  
- Stealth Rock  

Magearna @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Moonblast  
- Rapid Spin  
- Milk Drink  
- U-turn  

Yveltal @ Safety Goggles  
Ability: Unaware  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 52 Spe  
Sassy Nature  
- Revelation Dance  
- Spectral Thief  
- Heal Order  
- U-turn