just dont miss x) (Gyarados) @ Gyaradosite  
Ability: Magic Bounce  
EVs: 36 HP / 252 Atk / 220 Spe  
Adamant Nature  
- Shell Smash  
- Dark Void  
- Knock Off  
- Gunk Shot  

Xerneas @ Leftovers  
Ability: Wonder Guard  
EVs: 248 HP / 176 Def / 84 SpA  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Dark Void  
- Substitute  
- Baton Pass  
- Moonblast  

Rayquaza-Mega @ Life Orb  
Ability: Mold Breaker  
EVs: 68 HP / 252 SpA / 188 Spe  
Modest Nature  
IVs: 0 Atk  
- Dark Void  
- Substitute  
- Shell Smash  
- Oblivion Wing  

Blissey (F) @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Parting Shot  
- Defog  
- Aromatherapy  

Regigigas @ Expert Belt  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 Spe  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- Water Shuriken  
- Spikes  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def  
Impish Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Encore  
- Destiny Bond  
- Recover