Well, by the title of my thread, it's fairly same to assume I have pokemon with Prankster on my team, and frankly I love it! It gives a lot of viability to pokemon who didn't have as great as a role as they can have now, *coughSableyecough*, and I think that's really cool, anyways, here's my team so far.
Sableye (Crown Jewel)
Ability: Prankster
Nature: Careful
Item: Leftovers
EV's: 252 HP/120 Def/136 SpD
Moveset:
-Will-o-Wisp
-Night Shade (I use shadow claw occasionally too)
-Toxic
-Recover
Sableye's Dream World Ability gave it so much use as an amazing lead; whether it be against the weather leads oh so prevalent in this metagame, he still works amazingly well on my team. With Prankster, he is almost guaranteed to get off a toxic or will-o-wisp depending on the pokemon he's facing, and then is able to toxic stall with recover or dish out 100 damage to the opponent's HP with night shade. I've gotten a lot of rage quits just from him crippling an opponent's entire team. I'm pretty sure I want him to stay on this team, I love his usefulness, sadly I have to wait for him to come out with his DW ability (curse you GameFreak for not including him in the first wave of DW pokes! :cloud:)
LickiLicky (RainGoAway)
Ability: Cloud Nine
Nature: Brave
Item: Leftovers
EV's: 252 HP/116 Atk/140 SpA
Moveset:
-Work Up
-Surf
-Power Whip
-Flamethrower
This big guy is my Anti-Weather Pokemon, and during my testing, he's come in handy on quite a few occasions and on top of that, he's been a good partner for Sableye because Sableye is immune to fighting and Lickilicky is immune to ghost (which is suprisingly used a lot against sableye). I used the offensive Work Up EV spread from here on Smogon, and it works out well, once he gets off a couple of boosts, he can be a complete beast with the amount of HP he has. He also works as a good check to all of the main weather starters you'll see running around with Surf for Ninetales and all the sandstorm starters, Power Whip for Politoed and SS starters, and Flamethrower for the likes of Ferrothorn and Abomasnow.
Venomoth (CreativeName)
Ability: Tinted Lens
Nature: Timid
Item: Leftovers
EV's: 252 HP/ 4 SpA/ 252 Speed
Moveset:
-Quiver Dance
-Baton Pass
-Bug Buzz
-Sleep Powder
Venomoth is a welcome addition to my team in experience, usually, unless the opponent has already been status'd by one of my other pokemon, sleep powder quiver dance works very well. Usually, even if Venomoth isn't able to sleep powder, it's still able to get off one quiver dance and either use it to it's advantage or Baton Pass it to one of it's team mates. Sure it has stealth rock weakness, but I haven't run into so many stealth rock users in PO lately, and Venomoth is usually a once-and-done type of pokemon for me, so it's okay.
Nidoqueen (YourHighness)
Ability: Sheer Force
Nature: Bold
Item: Leftovers
EV's: 252 HP/ 252 Def/ 4 SpD
Moveset:
-Toxic Spikes
-Flamethrower
-Ice Beam
-Earth Power
Nideoqueen is my Toxic Spikes set up and absorber. She is great because she functions as a set-up, special attacker, and a wall. Nothing very special about her other than that with sheer force, the power of her moves get a welcome boost, and Nidoqueen is also loves getting a baton pass from venemoth, since it boosts it's special defense as well as giving it more power and speed. The main threats for nidoqueen are water typed special attackers, such as Jellicent or Politoed, since they can resist most of her moves and then strike back with a super effective STAB.
Whimsicott (FluffofDoom)
Ability: Prankster (Oh Yeah!)
Nature: Impish
Item: Leftovers (Again :p)
EV's: 252 HP/ 252 Def/ 4 SpD
Moveset:
-Substitute
-Stun Spore
-Leech Seed
-Encore
Did I mention I love Prankster? Well, Whimsicott uses it to it's full advantage making it a crazy sub-seeder. I usually bring in whimsicott later, once the opponent is poisoned/burned and set up then. Once whimsicott gets off a leech seed on the crippled opponent, it can basically sub-stall it into oblivion, which both annoys the opponent and helps me out a ton. The EV spread here allows Whimsicott to take advantage of Prankster, since all of it's moves have +1 priority, and allows it to take hits pretty well. The main threat to Whimiscott is Thundurus, which usually outspeeds it and is able to taunt; practically any grass types since they resist leech seed, but in that case I can still stun them; and pokemon that have multiple-step moves (such as skill link cloyster).
Cloyster (PearlofLutra, 10 points for whoever gets the reference)
Ability: Skill Link
Nature: Jolly
Item: Life Orb
EV's: 48 HP/ 252 Atk/ 208 Speed
Moveset:
-Shell Smash
-Rock Blast
-Icicle Spear
-Razor Shell
Cloyster is a pretty awesome pokemon, that is, when he can get a shell smash up, which is easy most of the time, but difficult other times. His build is a usual run-of-the-mill shell smash/skill link set. Like I said, when he's able to set up, he can wreck entire teams, but is pretty useless most of the time if he's not boosted sadly. I would have to say he's the weakest link, but also an amazing sweeper in the right situation. If I had to replace one of the pokemon on my team, cloyster would probably be it.

Ability: Prankster
Nature: Careful
Item: Leftovers
EV's: 252 HP/120 Def/136 SpD
Moveset:
-Will-o-Wisp
-Night Shade (I use shadow claw occasionally too)
-Toxic
-Recover
Sableye's Dream World Ability gave it so much use as an amazing lead; whether it be against the weather leads oh so prevalent in this metagame, he still works amazingly well on my team. With Prankster, he is almost guaranteed to get off a toxic or will-o-wisp depending on the pokemon he's facing, and then is able to toxic stall with recover or dish out 100 damage to the opponent's HP with night shade. I've gotten a lot of rage quits just from him crippling an opponent's entire team. I'm pretty sure I want him to stay on this team, I love his usefulness, sadly I have to wait for him to come out with his DW ability (curse you GameFreak for not including him in the first wave of DW pokes! :cloud:)

Ability: Cloud Nine
Nature: Brave
Item: Leftovers
EV's: 252 HP/116 Atk/140 SpA
Moveset:
-Work Up
-Surf
-Power Whip
-Flamethrower
This big guy is my Anti-Weather Pokemon, and during my testing, he's come in handy on quite a few occasions and on top of that, he's been a good partner for Sableye because Sableye is immune to fighting and Lickilicky is immune to ghost (which is suprisingly used a lot against sableye). I used the offensive Work Up EV spread from here on Smogon, and it works out well, once he gets off a couple of boosts, he can be a complete beast with the amount of HP he has. He also works as a good check to all of the main weather starters you'll see running around with Surf for Ninetales and all the sandstorm starters, Power Whip for Politoed and SS starters, and Flamethrower for the likes of Ferrothorn and Abomasnow.

Ability: Tinted Lens
Nature: Timid
Item: Leftovers
EV's: 252 HP/ 4 SpA/ 252 Speed
Moveset:
-Quiver Dance
-Baton Pass
-Bug Buzz
-Sleep Powder
Venomoth is a welcome addition to my team in experience, usually, unless the opponent has already been status'd by one of my other pokemon, sleep powder quiver dance works very well. Usually, even if Venomoth isn't able to sleep powder, it's still able to get off one quiver dance and either use it to it's advantage or Baton Pass it to one of it's team mates. Sure it has stealth rock weakness, but I haven't run into so many stealth rock users in PO lately, and Venomoth is usually a once-and-done type of pokemon for me, so it's okay.

Ability: Sheer Force
Nature: Bold
Item: Leftovers
EV's: 252 HP/ 252 Def/ 4 SpD
Moveset:
-Toxic Spikes
-Flamethrower
-Ice Beam
-Earth Power
Nideoqueen is my Toxic Spikes set up and absorber. She is great because she functions as a set-up, special attacker, and a wall. Nothing very special about her other than that with sheer force, the power of her moves get a welcome boost, and Nidoqueen is also loves getting a baton pass from venemoth, since it boosts it's special defense as well as giving it more power and speed. The main threats for nidoqueen are water typed special attackers, such as Jellicent or Politoed, since they can resist most of her moves and then strike back with a super effective STAB.

Ability: Prankster (Oh Yeah!)
Nature: Impish
Item: Leftovers (Again :p)
EV's: 252 HP/ 252 Def/ 4 SpD
Moveset:
-Substitute
-Stun Spore
-Leech Seed
-Encore
Did I mention I love Prankster? Well, Whimsicott uses it to it's full advantage making it a crazy sub-seeder. I usually bring in whimsicott later, once the opponent is poisoned/burned and set up then. Once whimsicott gets off a leech seed on the crippled opponent, it can basically sub-stall it into oblivion, which both annoys the opponent and helps me out a ton. The EV spread here allows Whimsicott to take advantage of Prankster, since all of it's moves have +1 priority, and allows it to take hits pretty well. The main threat to Whimiscott is Thundurus, which usually outspeeds it and is able to taunt; practically any grass types since they resist leech seed, but in that case I can still stun them; and pokemon that have multiple-step moves (such as skill link cloyster).

Ability: Skill Link
Nature: Jolly
Item: Life Orb
EV's: 48 HP/ 252 Atk/ 208 Speed
Moveset:
-Shell Smash
-Rock Blast
-Icicle Spear
-Razor Shell
Cloyster is a pretty awesome pokemon, that is, when he can get a shell smash up, which is easy most of the time, but difficult other times. His build is a usual run-of-the-mill shell smash/skill link set. Like I said, when he's able to set up, he can wreck entire teams, but is pretty useless most of the time if he's not boosted sadly. I would have to say he's the weakest link, but also an amazing sweeper in the right situation. If I had to replace one of the pokemon on my team, cloyster would probably be it.
Final Thoughts:
Testing this on Pokemon Online, it has had some really good results, and a lot of rage quits from people who go crazy once they see that I have two Pranksters :D. Some might think it's a bit counterproductive to have all of these status afflicting moves along with toxic spikes, but it works great; sure, Venomoth might not be able to sleep powder an opponent and Whimsicott might not be able to Paralyze, but they work well against pokemon that resist toxic spikes or before Nidoqueen can set spikes up. I've had a pretty good win/loss record with this team so far, but I'm open to comments/suggestions/criticisms on my team, hopefully they'll make my team even better! Thanks in advance!