Rate Meh Other Teamzorz! -Emerald-

[Pariah]

Yes. This is the team I beat Winona with.

Level 40 Swampart, rash.
Ability is torrent. Maximum Hp is 138.
Mud Shot
Return (Sweep move 1)
Surf (Sweep move 2)
Muddy Water

Level 35 Breloom, quiet w/ Leppa berry.
Ability is effect spore. Maximum Hp is 96.
Mega Drain
Mach Punch (sweep move)
Stun Spore
Counter

Level 30 Sableye, naive.
Ability is Keen Eye. Maximum HP is 85.
Fake out
Astonish
Flash
Metronome (The pwnest move in the world...Sweeps sometimes)

Level 24 Mightyena, careful w/Soothe bell.
Ability is Intimidate. Maximum HP is 73.
Rock Smash
Strength
Sand Attack
Roar

Level 25 Tropius, calm.
Ability is chlorophyll. Maximum HP is 90.
Fly
Razor Leaf
Sleep Talk
Sweet Scent

Level 25 Castform, modest w/Mystic Water.
Ability is Forecast. Maximum HP is 77.
Powder storm
Rain Dance (Helps Swampert)
Sunny Day
Hail

 

[K3V1N]

Swampert doesn't need 2 surfs. Replace it with something like ice-beam.
I also suggest taking sableye out of your team. Doesn't look like it can help you much consider it's level, moveset, and stats.
Tropius doesn't need sleep talk if it doesn't have rest and as for castform, level it to 30 so it can learn weatherball.