Deoxys-Speed @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sheer Cold  
- Sing  
- Gastro Acid  
- Zap Cannon  

Mewtwo-Mega-X @ Choice Band  
Ability: Shadow Tag  
EVs: 120 HP / 252 Atk / 136 Spe  
Jolly Nature  
- Gear Grind  
- Sacred Sword  
- Trick  
- Bolt Strike  

Gyarados-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 4 Def  
Adamant Nature  
- Pursuit  
- Sucker Punch  
- Water Shuriken  
- Gastro Acid  

Latios-Mega @ Soul Dew  
Ability: Mold Breaker  
EVs: 160 HP / 252 SpA / 96 Spe  
Modest Nature  
IVs: 0 Atk  
- Dark Void  
- Shell Smash  
- Spacial Rend  
- Psystrike  

Arceus-Electric @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Shell Smash  
- Bolt Strike  
- King's Shield  
- Spore  

Arceus-Water @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Defog  
- Aromatherapy  
- Milk Drink