Hippowdon @ Smooth Rock  
Ability: Sand Stream  
EVs: 252 HP / 80 Def / 176 SpD  
Impish Nature  
- Iron Head  
- Toxic  
- Slack Off  
- Stealth Rock  

Stoutland @ Choice Band  
Ability: Sand Rush  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Return  
- Superpower  
- Facade  
- Crunch  

Slowbro @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Grass Knot  
- Toxic  
- Slack Off  
- Yawn  

Aerodactyl-Mega @ Aerodactylite  
Ability: Tough Claws  
Shiny: Yes  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Stone Edge  
- Pursuit  
- Roost  
- Crunch  

Hydreigon @ Firium Z  
Ability: Levitate  
Shiny: Yes  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Flamethrower  
- Flash Cannon  
- U-turn  
- Roost  

Latias (F) @ Black Sludge  
Ability: Levitate  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Surf  
- Toxic  
- Defog  
- Recover