Sableye-Mega @ Flame Orb  
Ability: Wonder Guard  
Level: 2  
EVs: 76 HP  
Relaxed Nature  
IVs: 0 Atk  
- Psycho Shift  
- Curse  
- Pain Split  
- Magic Coat  

Tyranitar-Mega @ Toxic Orb  
Ability: Poison Heal  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
IVs: 0 Atk  
- Foul Play  
- King's Shield  
- Roost  
- Will-O-Wisp  

Giratina @ Griseous Orb  
Ability: Prankster  
EVs: 248 HP / 252 Def / 4 SpD / 4 Spe  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Encore  
- Curse  
- Baton Pass  

Mewtwo-Mega-X @ Choice Scarf  
Ability: Arena Trap  
EVs: 252 Atk / 84 Def / 172 Spe  
Naughty Nature  
- Surf  
- Gunk Shot  
- Dragon Ascent  
- Close Combat  

Ferrothorn @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 168 Def / 92 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Defog  
- Stealth Rock  
- Parting Shot  

Xerneas @ Shed Shell  
Ability: Wonder Guard  
EVs: 116 HP / 8 Def / 252 SpA / 32 SpD / 100 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Aromatherapy  
- Roost  
- Taunt