Rain Dance Team
At a glance:







Nature: Sassy
Item: Damp rock
Ev's: 252 hp/ 96 def/ 162 special def
Levitate
Stealth rock
Gyro ball
Earthquake
Rain dance
Bronzong does a lot of good things for this team. He can get stealth rock and rain dance up early (although not too often because of taunt). He has has extra ev's into special defense so he can take more punishment from special attackers. taking around 35% from timid heatrans, meaning special salamence cant touch him.

Nature: Bold
Item: Ligh clay
Ev's: 252 hp/ 136 def/ 124 Sdef
Levitate
Thunderbolt
Hydropump
Reflect
Lightscreen
hydropump works great with rain dance, and allows rotom to hit tyranitar hard and grounds. His main purpose is to counter steels switching in or out though, so outrage can roam free. Hydro pump and tbolt hits all the steels descently espeically heatran, who loves to go boom on kingdra. (this move set could use some work maybe. I know trick would be particularily useful.)

Nature:Naughty
Item: Life orb
Ev's: 90 hp/ 252 att/ 168 spe
Swift swim
Substitute
Dragon dance
Waterfall
Outrage
Outspeeds scarfed 100's right off the hop (assuming rain dance is in play).
If light screen and reflect are also in play, theres not a whole lot that can be done to stop him.

Nature: Modest
Item: Damp Rock
Ev's: 252/ spe/ 252 satt/ 4 hp
Swift Swim
Rain dance
Surf
Ice beam
Grass knot
My second rain dance user, and last special attacker on the team. Not much to say about him. If rain is in play he can kill, and revenge kill, very well. handles starmie, swampert, and performs honorably against even gyarados. enough said.

Nature:Careful
Item:Chesto berry
Ev's: 252 hp/ 96 special def/ 160 def
Water Absorb
Curse
Rest
Waterfall
Stonedge
With rain dance running all the time, i needed to make sure i had a pokemon that loved handling powered up water attacks from the oppenents side. quagsire does this and grants me and electric immunity at the same time. Pokemon like starmie who typically wield just surf and thunderbolt are absolutely uselss agaisnt him and allow me time to curse up. Rain dance gives waterfall an extra kick. The encore/counter set also worked well on quasire because physicals like scizor loves to come in on him and uturn out.
and i could catch pokemon trying to stat up against him with encore. So i havnt made up my mind about it yet, and im open for advice on the matter.

Nature: Adament
Item: Leftovers
Ev's: 252 hp/ 4 att/ 96 def/ 156 sdef
Dry Skin
Spore
X-scissor
Seed Bomb
Aromatherapy
Parasect loves the rain healing 18.5%, and is another water immune. and even though it's weak in ou, it handles the likes of celebi, and vaporeon (who are usually hp elec or ice beam) along with other psychics quite well. Seed bomb is useful but im wondering if pursuit would be more useful. But his main tool is spore, and with an immunity and 2xquad resistances he can get in spore, and cure status when needed (a key factor since T-wave ruins kingdra and ludicolo)