This is, unfortunately, my first RMT. It is not my first team. It will likely not be my last team. However, it is, so far, the most effective team I've created. And, after having beaten people who had soundly beaten other teams, I've decided to post this. So, without further ado, let me introduce my Rain Team.
Politode @ Choice Scarf
Ability: Drizzle
EVs: 4 HP, 252 SpA, 252 Spe
IVs: 30 SpA, 30 SpD
Nature: Modest
Hydro Pump
Ice Beam
Focus Blast
Hidden Power (Ground)
Essential to every 5th Gen team that uses Rain is Politode. The permanent weather is quite nice, and a 306 SpA score using STAB Hydro Pump in the rain is nothing to sneeze at if you're not rather specially bulky. I picked the moves myself, so feel free to tell me everything but Hydro Pump is worthless, though I do enjoy Ice Beam when I predict Gliscor. Overall, it hits fairly hard, has 358 speed (enough to be faster than a Timid Gengar, and more importantly, a non-scarfed Timid Latios), and can really move through a good deal of non water, non grass type Pokemon.
Celebi @ Leftovers
Ability: Natural Cure
EVs: 252 HP, 220 Def, 36 Spe
Nature: Bold
Leaf Storm
Thunder Wave (May Replace with Nasty Plot. Uncertain.)
Leech Seed
Heal Bell
After some bad experiences with some offensive Celebi, and some Dragonite that ran T-Wave, I decided to try out a variation of Celebi that I came up with, (though I did use the EV spread from AccidentalGreed's Defensive spread). Because I kept finding issue with status either crippling me beyond recovery, or slowing me down so much that I just couldn't regain pace, and would end up KOed frequently. Heal Bell solved that problem. T-Wave allowed me to hinder the opponents, Leech Seed for recovery, and Leaf Storm, for STAB. I might also drop Leech Seed for HP - Fire.
Latios @ Choice Scarf
Ability: Levitate
EVs: 4 HP, 252 SpA, 252 SpE
Nature: Modest
Surf
Draco Meteor
Thunder
Psyshock
Quagsire wasn't working out, and I felt some extra oomph might be needed, to help the team. I like what my Politode was doing, which was sweeping out things weak to Ice/Water, and sometimes Fighting (and now ground, with HP Ground...), and decided a similar approach may be useful with Latios. 394 SpA, with 400something speed has been working out, though the set does have some obvious weaknesses, and limitations. However, it does still resist Fire, which is good, and has some potent moves. I'm not sure if this is a good enough reason to use Latios, though. My team may need someone else. I'm still testing. I'm also considering EV Spread of: 82 HP, 252 SpA, and 176 Spe, for 300 Speed (then scarf, to I believe 450), and giving some added bulk, so it survives a bit longer. I know it's only 19 extra HP total, but, it might be worth it. I'm not sure. Ugh... Still working, still thinking, and still testing.
Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP, 240 Def, 16 Spe
Nature: Impish
Spikes
Whirlwind
Roost
Brave Bird
An all around great Physical Wall, and one off three steel types on my team, it really enjoys the rain, helping it survive Hidden Power Fire fairly often. In fact, almost anything other than Fire Blast tends to not KO him in the rain. At least, for Fire attacks. Whirlwind for phasing, Spikes for damage, Roost to Heal, Brave Bird for Conkeldurr / Taunt... Skarmory is not very different now than he was in 4th Gen, and I don't think he needs to change much. Especially since my next Pokemon is...
Forretress @ Leftovers
Ability: Sturdy
EVs: 252 HP, 4 Def, 252 SpD
Nature: Calm
Rapid Spin
Stealth Rock
Toxic Spikes
Volt Change
Ah, Forretress. The classic Bug/Steel typing that helps make Scizor so potent, with all those resistances, and only one weakness, coupled with your ability to set up hazards, spin them away, and be immune to poison make you one of my favorite Pokemon out there. The idea of running Volt Change occurs to me, because of Magnezone. If so, IVs go to 31 Spe, and Nature becomes Careful. Fantastic Spinner, and loves the rain to cover up its glaring weakness to Fire.
And, finally, we have one of my personal favorite Pokemon,
Scizor @ Choice Band
Ability: Technician
EVs: 248 HP, 252 Attack, 8 Spe
Nature: Adamant
Bullet Punch
Super Power
Pursuit
U-Turn
My primary attacker. Hits hard, hits fast, and yes, runs exactly enough speed to be faster than the average Scizor, as seemingly pointless as that may be. Scizor is a potent threat, and has saved my ass more times than I can count. Potent Priority, great typing, wide move pool, and base 130 attack all make Scizor just as fantastic today as he ever was.
Ah, my team. Love em. But, I feel like I'm missing something.
I can't put my finger on it. Either it's Fire, or it's Dragon, or maybe Electric? I swear, if I knew, I'd fix it. But, I cannot figure it out. If you like the team, though, feel free to say so, and offer suggestions. If you hate it, tell me why. And, if you love the team so much, you just have to? Go ahead and use it, and tell people that I made it. But, I doubt that last one's going to happen. :P
Thanks for your input in advance.
~omnicloud7strife~
PS: I'm Omni on the Smogon PO server.

Politode @ Choice Scarf
Ability: Drizzle
EVs: 4 HP, 252 SpA, 252 Spe
IVs: 30 SpA, 30 SpD
Nature: Modest
Hydro Pump
Ice Beam
Focus Blast
Hidden Power (Ground)
Essential to every 5th Gen team that uses Rain is Politode. The permanent weather is quite nice, and a 306 SpA score using STAB Hydro Pump in the rain is nothing to sneeze at if you're not rather specially bulky. I picked the moves myself, so feel free to tell me everything but Hydro Pump is worthless, though I do enjoy Ice Beam when I predict Gliscor. Overall, it hits fairly hard, has 358 speed (enough to be faster than a Timid Gengar, and more importantly, a non-scarfed Timid Latios), and can really move through a good deal of non water, non grass type Pokemon.

Celebi @ Leftovers
Ability: Natural Cure
EVs: 252 HP, 220 Def, 36 Spe
Nature: Bold
Leaf Storm
Thunder Wave (May Replace with Nasty Plot. Uncertain.)
Leech Seed
Heal Bell
After some bad experiences with some offensive Celebi, and some Dragonite that ran T-Wave, I decided to try out a variation of Celebi that I came up with, (though I did use the EV spread from AccidentalGreed's Defensive spread). Because I kept finding issue with status either crippling me beyond recovery, or slowing me down so much that I just couldn't regain pace, and would end up KOed frequently. Heal Bell solved that problem. T-Wave allowed me to hinder the opponents, Leech Seed for recovery, and Leaf Storm, for STAB. I might also drop Leech Seed for HP - Fire.

Latios @ Choice Scarf
Ability: Levitate
EVs: 4 HP, 252 SpA, 252 SpE
Nature: Modest
Surf
Draco Meteor
Thunder
Psyshock
Quagsire wasn't working out, and I felt some extra oomph might be needed, to help the team. I like what my Politode was doing, which was sweeping out things weak to Ice/Water, and sometimes Fighting (and now ground, with HP Ground...), and decided a similar approach may be useful with Latios. 394 SpA, with 400something speed has been working out, though the set does have some obvious weaknesses, and limitations. However, it does still resist Fire, which is good, and has some potent moves. I'm not sure if this is a good enough reason to use Latios, though. My team may need someone else. I'm still testing. I'm also considering EV Spread of: 82 HP, 252 SpA, and 176 Spe, for 300 Speed (then scarf, to I believe 450), and giving some added bulk, so it survives a bit longer. I know it's only 19 extra HP total, but, it might be worth it. I'm not sure. Ugh... Still working, still thinking, and still testing.

Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP, 240 Def, 16 Spe
Nature: Impish
Spikes
Whirlwind
Roost
Brave Bird
An all around great Physical Wall, and one off three steel types on my team, it really enjoys the rain, helping it survive Hidden Power Fire fairly often. In fact, almost anything other than Fire Blast tends to not KO him in the rain. At least, for Fire attacks. Whirlwind for phasing, Spikes for damage, Roost to Heal, Brave Bird for Conkeldurr / Taunt... Skarmory is not very different now than he was in 4th Gen, and I don't think he needs to change much. Especially since my next Pokemon is...

Forretress @ Leftovers
Ability: Sturdy
EVs: 252 HP, 4 Def, 252 SpD
Nature: Calm
Rapid Spin
Stealth Rock
Toxic Spikes
Volt Change
Ah, Forretress. The classic Bug/Steel typing that helps make Scizor so potent, with all those resistances, and only one weakness, coupled with your ability to set up hazards, spin them away, and be immune to poison make you one of my favorite Pokemon out there. The idea of running Volt Change occurs to me, because of Magnezone. If so, IVs go to 31 Spe, and Nature becomes Careful. Fantastic Spinner, and loves the rain to cover up its glaring weakness to Fire.
And, finally, we have one of my personal favorite Pokemon,

Scizor @ Choice Band
Ability: Technician
EVs: 248 HP, 252 Attack, 8 Spe
Nature: Adamant
Bullet Punch
Super Power
Pursuit
U-Turn
My primary attacker. Hits hard, hits fast, and yes, runs exactly enough speed to be faster than the average Scizor, as seemingly pointless as that may be. Scizor is a potent threat, and has saved my ass more times than I can count. Potent Priority, great typing, wide move pool, and base 130 attack all make Scizor just as fantastic today as he ever was.
Ah, my team. Love em. But, I feel like I'm missing something.
I can't put my finger on it. Either it's Fire, or it's Dragon, or maybe Electric? I swear, if I knew, I'd fix it. But, I cannot figure it out. If you like the team, though, feel free to say so, and offer suggestions. If you hate it, tell me why. And, if you love the team so much, you just have to? Go ahead and use it, and tell people that I made it. But, I doubt that last one's going to happen. :P
Thanks for your input in advance.
~omnicloud7strife~
PS: I'm Omni on the Smogon PO server.