This setup is similar to a few I've seen, with a couple changes:
Volbeat @ Ghostium-Z
Ability: Prankster
Nature: Calm (+SpD, -Atk)
EV: 252 HP / 128 Def / 128 SpD
- Confuse Ray
- Tail Glow
- Silver Wind
- Baton Pass
Z- Confuse Ray confuses target, and raises Special Attack +1... Tailglow (obviously) raises Special Attack +3... If they're hitting themselves alot from confusion, and you have a comfortable amount of HP left, you can smack them around with Silver Wind until you're nervous about getting knocked out, or they snap out of confusion (Silver Wind has a chance of raising all stats), then Baton Pass (with +1 priority thanks to Prankster) the +4 Special Attack boost, plus whatever boosts Silver Wind granted you, to a fast, bulky, special attacker that's now boosted into a KOing machine.