Xerneas @ Power Herb  
Ability: Fairy Aura  
Level: 50  
EVs: 116 HP / 4 Def / 132 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Geomancy  
- Dazzling Gleam  
- Protect  

Rayquaza-Mega @ Focus Sash  
Ability: Delta Stream  
Level: 50  
EVs: 4 HP / 244 Atk / 4 Def / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Extreme Speed  
- Swords Dance  
- Protect  

Smeargle @ Choice Scarf  
Ability: Own Tempo  
Level: 50  
EVs: 252 HP / 4 SpD / 252 Spe  
Jolly Nature  
IVs: 30 Atk / 30 Def  
- Dark Void  
- Fake Out  
- Switcheroo  
- Transform  

Scrafty @ Lum Berry  
Ability: Intimidate  
Level: 50  
EVs: 252 HP / 252 Atk / 4 SpD  
Adamant Nature  
- Knock Off  
- Fake Out  
- Low Kick  
- Quick Guard  

Volcarona @ Red Card  
Ability: Flame Body  
Level: 50  
EVs: 180 HP / 252 Def / 76 Spe  
Timid Nature  
IVs: 0 Atk  
- Overheat  
- Whirlwind  
- Rage Powder  
- Protect  

Thundurus (M) @ Sitrus Berry  
Ability: Prankster  
Level: 50  
EVs: 236 HP / 12 Def / 4 SpA / 252 SpD / 4 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunderbolt  
- Thunder Wave  
- Taunt  
- Protect