Liepard (M) @ Leftovers
Trait: Prankster
EVs: 252 HP / 128 Def / 128 SDef
Jolly Nature (+Spd, -SAtk)
- Substitute
- Foul Play
- Assist
- Swagger
Ditto @ Choice Scarf
Trait: Imposter
EVs: 252 HP / 252 Atk / 4 Spd
Hardy Nature
- Transform
Breloom (F) @ Toxic Orb
Trait: Poison Heal
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature (+Atk, -SAtk)
- Spore
- Focus Punch
- Protect
- Counter
Gengar (M) @ Choice Scarf
Trait: Levitate
EVs: 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Trick
- Metronome
- Destiny Bond
- Counter
Mew @ (No Item)
Trait: Synchronize
EVs: 252 HP / 4 Def / 252 Spd
Timid Nature (+Spd, -Atk)
- Thief
- Transform
- Trick
- Metronome
Wobbuffet (M) @ Leftovers
Trait: Shadow Tag
EVs: 28 HP / 252 Def / 228 SDef
Bold Nature (+Def, -Atk)
- Counter
- Mirror Coat
- Destiny Bond
As I said the sleep clause prevents this team from being ridiculously strong but it is still a lot of fun to use. One of it's greatest weaknesses is opposing substitutes since they block transform and status ailments and because there are almost no direct attacking moves on the team.
I'm working on making this team in-game right now, after which I imagine it will be a beast in random wi-fi where there is no sleep clause.
Anyways here is a video of it in action on Pokemon Online, sorry the video has no music or narration so it is sort of dry, but hopefully you can appreciate the strategy going on.