Tyranitar-Mega @ Tyranitarite  
Ability: Sand Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Stone Edge  
- Fire Punch  
- Ice Punch  

Grimmsnarl @ Light Clay  
Ability: Prankster  
EVs: 92 HP / 252 Atk / 164 Spe  
Adamant Nature  
- Spirit Break  
- Reflect  
- Light Screen  
- Taunt  

Mew @ Red Card  
Ability: Synchronize  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Spikes  
- Taunt  
- Flare Blitz  

Gyarados @ Flyinium Z  
Ability: Moxie  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Bounce  
- Waterfall  
- Earthquake  

Magearna @ Weakness Policy  
Ability: Soul-Heart  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shift Gear  
- Thunderbolt  
- Ice Beam  
- Focus Blast  

Serperior @ Leftovers  
Ability: Contrary  
EVs: 56 HP / 200 SpA / 252 Spe  
Timid Nature  
IVs: 1 Atk  
- Leaf Storm  
- Hidden Power [Fire]  
- Substitute  
- Glare