This is a party I came up with that is basically designed to mess up the strategy of opposing weather teams or just use all four weathers to deal with a non-weather team effectively.
Hippowdon @ Leftovers
Nature: Impish
Ability: Sand Stream
EVs: 252 HP, 252 Sp D, 4 Atk
Moves:
Earthquake
Roar
Stealth Rock
Slack Off
Hippowdon leads and sets up rocks. After setting up rocks, it uses Roar to switch out Flying-types, anything with Levitate, anything with an Air Balloon, and spinners or Earthquake to deal with anything it can damage. It uses Slack Off as neccessary to heal HP.
Abomasnow @ Leftovers
Nature: Quiet?
Ability: Snow Warning
EVs: 252 HP? 200 Atk? 56 Sp A?
Moves:
Blizzard
Leech Seed?
Substitute?
Focus Punch?
Abomasnow enters to start Hail to cause residual damage to Rock, Ground, and Steel types. It uses Blizzard with 100 Accuracy in Hail. It can use Substitute to stall for residual damage, which is even more effective with Leftovers and Leech Seed. Focus Punch hits hard if Abomasnow has time (and a Substitute set up) to use it.
Ninetales @ Fire Gem?
Nature: Timid?
Ability: Drought
EVs: 252 Sp A, 252 Def?, 4 HP?
Moves:
Flamethrower
Dark Pulse
Solarbeam
Hidden Power Electric
Ninetales can destroy parties with its powerful special attack and rather large movepool. STAB Flamethrower with a Fire Gem in the sun hurts anything it hits. Dark Pulse hurts Ghosts and Psychics and can cause Flinching. Solarbeam destroys Swampert and Quagsire and waters in general. Hidden Power Electric hits the waters that don't fear Solarbeam hard.
Politoed @ Leftovers
Nature: Calm
Ability: Drizzle
EVs: 252 Def, 252 HP, 4 Sp A
Moves:
Scald
Ice Beam
Psychic?
Toxic
STAB Scald in the rain hurts almost anything and can leave a burn. Toxic lets you deal residual damage. Ice Beam hits Grass types and Dragons. Psychic is another move that can fill the fourth space and give added coverage. Politoed is all about dealing with Dragons and stalling. Its HP and Defenses are hard to overcome, especially when you have to worry about a STAB move that receives a rain boost.
Cloyster@ White Herb?
Nature: Impish
Ability: Overcoat
EVs: 252 Sp D, 252 HP, 4 Def
Moves:
Ice Shard?
Rapid Spin
Shell Smash?
Explosion
Cloyster is a spinner. It deals with entry hazards and Leech Seed. Ice Shard gets Priority and can effectively deal with Dragons. Overcoat allows it to be active in Sandstorm or Hail instead of just Hail without any residual damage. Shell Smash boosts Speed, Attack, and Special Attack and the reductions are cancelled out by the White Herb.
Reuniclus@ Flame Orb?
Nature: Modest
Ability: Magic Guard
EVs: 252 HP, 168 Def, 88 Sp D
Moves:
Psyshock
Trick
Shadow Ball
Recover
Reuniclus can switch in to take a Leech Seed, Burn, or Poison without any ill effects. It can switch in without worrying about any entry hazards. It doesn't matter what the weather is, because it won't effect Reuniclus. Reuniclus Tricks its Flame Orb onto another Pokemon to inflict a burn, preferably on a physical attacker. If it doesn't like the item, it can Trick back to continue Tricking the Flame Orb onto other Pokemon. Psyshock hits Blissey REALLY hard and covers pokemon with weak Defense but strong Special Defense. Shadow Ball grants more coverage and is reliable. Reuniclus can also use Recover to regain lost HP and stall.
Hippowdon @ Leftovers
Nature: Impish
Ability: Sand Stream
EVs: 252 HP, 252 Sp D, 4 Atk
Moves:
Earthquake
Roar
Stealth Rock
Slack Off
Hippowdon leads and sets up rocks. After setting up rocks, it uses Roar to switch out Flying-types, anything with Levitate, anything with an Air Balloon, and spinners or Earthquake to deal with anything it can damage. It uses Slack Off as neccessary to heal HP.
Abomasnow @ Leftovers
Nature: Quiet?
Ability: Snow Warning
EVs: 252 HP? 200 Atk? 56 Sp A?
Moves:
Blizzard
Leech Seed?
Substitute?
Focus Punch?
Abomasnow enters to start Hail to cause residual damage to Rock, Ground, and Steel types. It uses Blizzard with 100 Accuracy in Hail. It can use Substitute to stall for residual damage, which is even more effective with Leftovers and Leech Seed. Focus Punch hits hard if Abomasnow has time (and a Substitute set up) to use it.
Ninetales @ Fire Gem?
Nature: Timid?
Ability: Drought
EVs: 252 Sp A, 252 Def?, 4 HP?
Moves:
Flamethrower
Dark Pulse
Solarbeam
Hidden Power Electric
Ninetales can destroy parties with its powerful special attack and rather large movepool. STAB Flamethrower with a Fire Gem in the sun hurts anything it hits. Dark Pulse hurts Ghosts and Psychics and can cause Flinching. Solarbeam destroys Swampert and Quagsire and waters in general. Hidden Power Electric hits the waters that don't fear Solarbeam hard.
Politoed @ Leftovers
Nature: Calm
Ability: Drizzle
EVs: 252 Def, 252 HP, 4 Sp A
Moves:
Scald
Ice Beam
Psychic?
Toxic
STAB Scald in the rain hurts almost anything and can leave a burn. Toxic lets you deal residual damage. Ice Beam hits Grass types and Dragons. Psychic is another move that can fill the fourth space and give added coverage. Politoed is all about dealing with Dragons and stalling. Its HP and Defenses are hard to overcome, especially when you have to worry about a STAB move that receives a rain boost.
Cloyster@ White Herb?
Nature: Impish
Ability: Overcoat
EVs: 252 Sp D, 252 HP, 4 Def
Moves:
Ice Shard?
Rapid Spin
Shell Smash?
Explosion
Cloyster is a spinner. It deals with entry hazards and Leech Seed. Ice Shard gets Priority and can effectively deal with Dragons. Overcoat allows it to be active in Sandstorm or Hail instead of just Hail without any residual damage. Shell Smash boosts Speed, Attack, and Special Attack and the reductions are cancelled out by the White Herb.
Reuniclus@ Flame Orb?
Nature: Modest
Ability: Magic Guard
EVs: 252 HP, 168 Def, 88 Sp D
Moves:
Psyshock
Trick
Shadow Ball
Recover
Reuniclus can switch in to take a Leech Seed, Burn, or Poison without any ill effects. It can switch in without worrying about any entry hazards. It doesn't matter what the weather is, because it won't effect Reuniclus. Reuniclus Tricks its Flame Orb onto another Pokemon to inflict a burn, preferably on a physical attacker. If it doesn't like the item, it can Trick back to continue Tricking the Flame Orb onto other Pokemon. Psyshock hits Blissey REALLY hard and covers pokemon with weak Defense but strong Special Defense. Shadow Ball grants more coverage and is reliable. Reuniclus can also use Recover to regain lost HP and stall.
