Whimsicott @ Life Orb  
Ability: Prankster  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Moonblast  
- Energy Ball / Giga Drain
- Psychic / U-turn
- Defog / Encore / Memento

Whimsicott @ Choice Specs  
Ability: Infiltrator  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Moonblast  
- Energy Ball  
- Psychic  
- U-turn / Switcheroo

Whimsicott @ Leftovers  
Ability: Infiltrator  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Moonblast  
- Giga Drain  
- Psychic / U-turn
- Defog / Encore / Memento / Toxic