Prankster is an ability which is, in my opinion, really awesome. It increases the priority of non-damaging moves such as Will-O-Wisp, Reflect and such by 1. However, this does not allow the moves to be blocked by the attack Quick Guard. Though moves that have more than a +1 Priority, such as ExtremeSpeed, will still move first. In fact, in my opinion, Volbeat is the best Pokemon on who you can have Prankster. Why? Volbeat was cursed with terrible Stats, a type weak to the most common types, an unusable movepool and pretty bad Abilities. With Prankster, Volbeat is now one of the greatest Special Attack Passers of ALL TIME because of moves such as Tail Glow and Baton Pass.
Here is my moveset for a Baton Pass Volbeat:
Baton Pass Volbeat
Volbeat (M) @ Leftovers
Trait: Prankster
EVs: 248 HP / 252 Def / 8 SDef
Bold Nature (+Def, -Atk)
- Tail Glow
- Baton Pass
- Moonlight
- Substitute
Since i see you seem to appreciate Whimsicott, here's one for him too!
Support Whimsicott
Whimsicott (M) @ Leftovers
Trait: Prankster
EVs: 252 HP / 252 Def / 4 SDef
Impish Nature (+Def, -SAtk)
- Encore
- Leech Seed
- Stun Spore
- U-turn
Sableye has the potential for a good Prankster moveset and i have two Sableyes for you:
Physical Counter Sableye
Sableye (M) @ Leftovers
Trait: Prankster
EVs: 252 HP / 120 Def / 136 SDef
Calm Nature (+SDef, -Atk)
- Will-O-Wisp
- Recover
- Taunt
- Foul Play
Here's the second one:
Stall/Trick Sableye
Sableye (M) @ Choice Scarf
Trait: Prankster
EVs: 252 HP / 120 Def / 136 SDef
Calm Nature (+SDef, -Atk)
- Trick
- Recover
- Taunt
- Torment
I am really sorry if the movesets are terrible, i don't have much experience in Movesets.