Butterfree @ Quick Claw  
Ability: Compound Eyes  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 2 Atk / 30 SpA / 30 Spe  
- Sleep Powder  
- Stun Spore  
- Psychic  
- Hidden Power [Fire]  

Butterfree @ Choice Band  
Ability: Compound Eyes  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Silver Wind  
- Aerial Ace  
- Sleep Powder  
- Hidden Power [Fighting]  

Butterfree @ Mystic Water  
Ability: Compound Eyes  
EVs: 252 SpA / 252 Spe  
Timid Nature  
IVs: 2 Atk / 30 Def / 30 SpA  
- Sleep Powder  
- Stun Spore  
- Rain Dance  
- Hidden Power [Water]