Butterfree @ Focus Sash
Ability: Compound Eyes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sleep Powder
- Stun Spore
- Quiver Dance / Skill Swap
- Air Slash / U-turn
Butterfree @ Buginium Z
Ability: Tinted Lens
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Substitute / Roost
- Quiver Dance
- Bug Buzz / Air Slash
- Sleep Powder

Additional Moves: Giga Drain, Energy Ball, Psychic
Additional Items: Flyinium Z, Leftovers, Life Orb
Notes:
- Buginium Z allows Butterfree to break through Pokemon that Bug Buzz would normally fail to break.
- Compound Eyes can be used over Tinted Lens, if you aren't worried bout beating checks like Muk or Probopass.
- Bug Buzz and Air Slash offer effective coverage, which is only resisted by Steel.
- Energy Ball can threaten Rock types who do 4x Super-Effective damage to Butterfree
- Focus Sash is useful for those who want to guarantee Sleep Powder, but also risk getting hurt by high priority.
- Skill Swap offers a way to remove abilities that hinder Butterfree's powders, such as Bouffalant and Natu
- Skill Swap + Sleep Powder compares to Spore Smeargle, but with Hazards traded for Offense.