Theorymon'ing as it hasn't been implemented on Showdown yet but:
Liepard @Choice Band Ability: Prankster
252HP/ 252Spe/ 4 Def (No idea on the EVs apart from max speed)
Trick
Foul Play
Taunt/ Encore
Thunder Wave
Unless I've got it horribly wrong Foul Play uses the opponents attack stat, meaning...