Here's 3 sets for Liepard:
The 1st Set
Ability: Prankster
Item: Life Orb
Nature: Modest
EVs: 252 Sp. Attack, 252 Speed
Moves:
-Encore (For Setting Up)
-Substitute (For Protection & Deciding When To Use Encore)
-Nasty Plot (For Extreme Damage)
-Dark Pulse (Good Power, STAB, & 20% Flinch)
The 2nd Set:
Ability: Prankster
Item: Leftovers
Nature: Timid
EVs: 252 HP, 252 Speed (You could also sacrifice some Speed or HP for better Defenses)
Moves:
-Encore (For Setting Up)
-Substitute (For Protection & Deciding When To Use Encore)
-Swagger (Annoying)
-Foul Play (Infuriating)
The 3rd Set (Also Known As 'Really Annoying!'):
Ability: Prankster
Item: Leftovers
Nature: Timid
EVs: 252 HP, 252 Speed (You could also sacrifice some Speed or HP for better Defenses)
Moves:
-Attract (Your Liepard Should Be Female)
-Thunder Wave (Paralysis)
-Swagger (Painful Confusion)
-Dark Pulse (Good Power, STAB, & 20% Flinch)
(Bold=Argh!)
Hope You Like These!