Giratina @ Griseous Orb  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Curse  
- Encore  
- Will-O-Wisp  

Gyarados-Mega @ Black Glasses  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Sucker Punch  
- Pursuit  
- Knock Off  
- Water Shuriken  

Blissey @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Milk Drink  
- Whirlwind  
- Stealth Rock  
- Glare  

Dialga @ Draco Plate  
Ability: Mold Breaker  
EVs: 232 HP / 8 Def / 252 SpA / 16 Spe  
Modest Nature  
IVs: 0 Atk  
- Judgment  
- Flash Cannon  
- Shell Smash  
- Recover  

Latios-Mega (M) @ Soul Dew  
Ability: Protean  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Vacuum Wave  
- Flash Cannon  
- Moonblast  
- Grass Knot  

Kyogre-Primal @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 240 SpD / 20 Spe  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Defog  
- Soft-Boiled  
- Aromatherapy