Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Encore  
- Curse  
- Recover  
- Destiny Bond  

Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpA  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Stealth Rock  
- Recover  
- Parting Shot  
- Chatter  

Registeel @ Shed Shell  
Ability: Magic Bounce  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Recover  
- Defog  
- Toxic  
- U-turn  

Mewtwo-Mega-X @ Choice Scarf  
Ability: Huge Power  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Sacred Fire  
- Play Rough  
- Gunk Shot  
- Water Shuriken  

Dialga @ Iron Plate  
Ability: Mold Breaker  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Spore  
- Judgment  
- Spacial Rend  
- Shell Smash  

Garchomp-Mega @ Mental Herb  
Ability: Mold Breaker  
EVs: 120 HP / 252 Atk / 4 SpD / 132 Spe  
Adamant Nature  
- Shell Smash  
- Thousand Arrows  
- Dark Void  
- Ice Shard