
Why this little bugger is not #1 in usage is absolutely beyond me. It can singlehandedly win game after game, with virtually no skill required. Being the only (viable) pokemon able to pass quiver dance, it provides every special attacker, of which there are a plethora of, with the boosts that will have them plowing through teams in a heartbeat.

Venomoth @ Focus Sash
Trait: Tinted Lens
EVs: 4 HP / 252 Spd / 252 SAtk
Timid Nature
- Baton Pass
- Quiver Dance
- Bug Buzz
- Sleep Powder
This right here is the only set that you will need to wreak havoc. Completely unprepared for and extremely easy to pull off, there is almost nothing that can prevent you from doing your job. Sleep Powder on turn 1, Quiver Dance once or twice, and then pass to any special sweeper. It is simple, it is dangerous, it is effective.
Example Team:
What better to showcase Venomoth's ease of use and outstanding capabilities than an example team?

Venomoth @ Focus Sash
Trait: Tinted Lens
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Baton Pass
- Quiver Dance
- Bug Buzz
- Sleep Powder

Meloetta @ Expert Belt
Trait: Serene Grace
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature
- Psyshock
- Shadow Ball
- Focus Blast
- Psychic

Raikou @ Life Orb
Trait: Pressure
EVs: 4 HP / 252 SAtk / 252 Spd
Rash Nature
- Aura Sphere
- Hidden Power [Ice]
- Calm Mind
- Thunderbolt

Nidoking (M) @ Life Orb
Trait: Sheer Force
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature
- Earth Power
- Fire Blast
- Ice Beam
- Thunderbolt

Shaymin @ Life Orb
Trait: Natural Cure
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Seed Flare
- Earth Power
- Psychic
- Hidden Power [Ice]

Gorebyss @ White Herb
Trait: Swift Swim
EVs: 252 HP / 4 SAtk / 252 Spd
Timid Nature
- Shell Smash
- Hydro Pump
- Ice Beam
- Baton Pass
Basically, set up with venomoth and then pass to whichever sweeper will either have the easiest time or will be able to take the post-pass attack the best. If a crobat is waiting to brave bird, send out raikou. If a mismagious is going to shadow ball, send out meloetta. When in doubt, send out nidoking, as it is by far the most potent of the lot and can 1hko nearly the entirety of the meta. Gorebyss serves as a back up passer, as well as a poke to absorb strong fire attacks (think darmanitan)
Why hasn't venomoth received the recognition it deserves? Will this change?