Doubles VGC
Volbeat @ Focus Sash
Ability: Prankster
Level: 50
Tera Type: Steel
EVs: 252 HP / 168 Def / 36 SpD / 52 Spe
Calm Nature
IVs: 0 Atk
- Tail Glow
- Baton Pass
- Tailwind
- Thunder Wave
The main focus is to use a tail glow and then baton pass the +3 boost to a strong special attacker like Flutter Mane or BM-Ursaluna. With prankster, status moves get priority, and with the focus sash, your chances of being able to survive to pass it on are better.
Since Volbeat has really bad stats, being out sped is almost guaranteed, and surviving a hit or two is unlikely. With this EV spread though, Booster Energy Flutter Mane's Moonblast is a three hit K-O, and you out speed Bulky Murkrow, which can be relevant due to Volbeat being affected by taunt, and Murkrow generally carrying Haze, with could negate the stat boost.
The other two moves, Tailwind and Thunder Wave are just there for speed control. Volbeat does have other good support moves, such as Encore, Helping Hand, Protect, Light Screen, Substitute, Taunt and Trick.