Double-Web Defiant Bisharp Sweep
Natu sets up Trick Room, then uses Skill Swap to transfer its ability, Magic Bounce, to the opponent. Shuckle then uses Sticky Web, which is reflected back to the user because of Magic Bounce. When Shuckle is hit, its Red Card activates, forcing the opponent to switch out, allowing Shuckle to use Sticky Web again, but this time on the opponents side of the field. Final Gambit can be used to inflict some damage on the opponent and allow a safe switch-in for Bisharp.
When Bisharp is sent in, Stick Web reduces its Speed, activating its ability, Defiant, which increases its Attack by two stages when its stats are lowered. Bisharp's White Herb then resets its lowered Speed back to normal. Knock Off is its main attack, while Iron Head can be used for Flinch RNG, Low Kick for Steel coverage, and Sucker Punch for priority.
Bisharp @ White Herb
Ability: Defiant
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
Sucker Punch
Knock Off
Iron Head
Low Kick
Shuckle @ Red Card
Ability: Sturdy
EVs: 252 HP / 176 Def / 80 SpD
Bold Nature
Sticky Web
Final Gambit
Protect
Rock Tomb
Natu @ Focus Sash
Ability: Magic Bounce
EVs: 252 Atk
Quiet Nature
IVs: 0 HP / 0 Atk / 0 Spe
Trick Room
Skill Swap
Thunder Wave
Pain Split
Music: Barber of Saville Overture (abridged) by Gioachino Rossini