Venusaur @ Black Sludge  
Ability: Overgrow  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Giga Drain  
- Synthesis  
- Leech Seed  
- Sludge Bomb  

Clefable @ Leftovers  
Ability: Magic Guard  
EVs: 120 HP / 252 SpD / 136 Spe  
Calm Nature  
IVs: 0 Atk  
- Moonblast  
- Wish  
- Protect  
- Teleport  

Gyarados @ Lum Berry  
Ability: Moxie  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Taunt  
- Dragon Dance  
- Earthquake  
- Waterfall  

Hippowdon @ Leftovers  
Ability: Sand Force  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Slack Off  
- Stealth Rock  
- Whirlwind  
- Earthquake  

Aegislash @ Choice Specs  
Ability: Stance Change  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
- Shadow Ball  
- Flash Cannon  
- Steel Beam  
- Shadow Sneak  

Rotom-Heat @ Heavy-Duty Boots  
Ability: Levitate  
EVs: 252 HP / 48 SpA / 208 Spe  
Timid Nature  
IVs: 0 Atk  
- Discharge  
- Overheat  
- Defog  
- Toxic