Stakataka @ Air Balloon  
Ability: Beast Boost  
EVs: 252 HP / 252 Atk / 4 SpD  
Lonely Nature  
IVs: 15 Def / 0 Spe  
- Trick Room  
- Gyro Ball  / Heavy Slam
- Stone Edge  
- Earthquake  

Nihilego @ Choice Scarf  
Ability: Beast Boost  
Hidden Power: Ice  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Wave  
- Toxic Spikes  / Grass Knot 
- Thunderbolt  / Thunder
- Power Gem  

Diancie @ Mental Herb  / Expert Belt / Pixie Plate
Ability: Clear Body  
EVs: 248 HP / 8 Atk / 252 SpA  
Quiet Nature  
IVs: 0 Spe  
- Trick Room  
- Moonblast  
- Earth Power  
- Diamond Storm  / Ancient Power / Psychic

Cradily @ Leftovers  / Chople Berry
Ability: Storm Drain  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
- Giga Drain  
- Recover  
- Toxic  
- Mirror Coat  

Omastar @ Air Balloon  
Ability: Weak Armor  
Hidden Power: Grass  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shell Smash  
- Hydro Pump  
- Ice Beam  
- Earth Power