(OU) RMT

Roserade@ Focus Sash
Natural Cure
4HP, 252Spd, 252Sp.Atk
Timid (+Spd -Atk)
Sleep Powder
Toxic Spikes
Leaf Storm
Hidden Power (Fire)

Just a standard lead Roserade, the Toxic Spikes help Suicune out a lot later in the game when im Calm Minding my stats up.

Azelf@ Focus Sash
Levitate
40Atk, 252Spd, 216sSp.Atk
Naive (+Speed, -Def)
Stealth Rock
Flamethrower
Psychic
U-turn
The point of this Azelf is to use Stealth Rock, and U-turn to safety, so I can try and do some damage with it later in the game, because it's also supposed to act as my mixed sweeper. Stealth Rocks arevery important to this set, because when Stealth Rocks are up, Heatran gets a lot more OHKO's than it would without them up.

Heatran@ Choice Scarf
Flash Fire
4HP, 252Spd, 252Sp.Atk
Naive (+Spd, -Def)
Flamethrower
Earthpower
Dragon Pulse
Explosion

Heatran just plays a very generic role of special sweeper, no strategy really implemented in this set, just try and KO as many things as possible before I get KO'd

Ambipom@ Life Orb
Technician
4HP, 252Atk, 252Spd
Jolly (+Spd, -Sp.Atk)
Fake Out
U-turn
Double Hit
Payback

I know it's weird having an Ambipom on a team when its not a lead, but I wanted something to annoy the opponent. I also needed something that could double as a physical sweeper, which obviously is not the standard role for Ambipom.

Suicune@ Leftovers
Pressure
252HP, 252Def, 4Sp. Def
Bold (+Def, -Atk)
Calm Mind
Rest
Sleep Talk
Surf

Suicune in my opinion is the most under rated bulky water in the game. After one Calm Mind it's able to take a Starmie's Thunderbolt, and then continue building up Calm Minds. What I'm saying is that Suicune beats every other water type in the OU. I think Suicune is the most reliable wall in the OU which is the main reason I have him. So basically Suicune's role on my team is a special tank.

Umbreon@ Leftovers
Synchronize
252HP, 88Def, 168Sp.Def
Impish (+Def, -Sp.Atk)
Curse
Wish
Protect
Payback

Umbreon is a bit of an experiment on this team, so for Umbreon in particular any advice on EV's, nature, or just a replacement for it would be very appreciated. Umbreon after it Curses 6 times becomes close to invincible, and is supposed to act as a physicle counterpart to Suicune. So Umbreon takes on the role of physical tank.
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So theres my team, I refuse to replace Suicune, but I am open to suggestions of a different nature, EV spread on him. Other than that any advice on any pokemon, including replacements of the pokemon would be much appreciated.

Any Spikes stacking team needs a Rapid Spin blocker so really get one.

1. You need a ghost type to block Rapid Spins. I'd recommend a Rotom appliance.

2. Umbreon might want Baton Pass so that it can pass those Curses to something that MIGHT replace Azelf or Roserade. That's your choice though

3. It's odd you have two pokemon filling in the lead role. It could work though.

Other then what I listed above, it's a good team. (And It's nice not to see all the standard OU threats in a rmt)

Roserades, in my oninion, are not the best leads, but if you want to keep it it does not matter. Taunt leads can easily over come your Roserade. Once Taunt is set up the opponent gets off their Rocks/Spikes/T-Spikes.

Having 2 pokemon holding a sash is a bad idea. Especially in a team with out spinners. U-Turn is even worst on pokemon that hold Sash! Anyway... Replace U-Turn with maybe Explosion to take out pokemon that try to beat up Azelf. Take off that Sash and replace it with a Life Orb. But I highly suggest you to not have Azelf and instead have a Uxie.
Uxie @ Leftovers
Sassy (+sp.def, -spd)
Levitate
252 HP / 252 SpD / 4 atk
~Stealth Rock
~U-Turn
~Psychic
~Yawn
To setting up Stealth Rock, Uxie is much better than Azelf because Uxie can actually take a couple of hits and scare away pokemon. Send Uxie out on a pokemon it scares and use Yawn, so that your opponent will either hit Uxie or return, either way giving you a free chance to set up Stealth Rocks. Psychic can easily take down a Breloom and U-Turn out to scout.

In a team that has Toxic Spikes, you do not want to use a Scarf Heatran. Instead use the TormentTran because he could stall out the opponent after the Toxic Spikes.
www.smogon.com/dp/pokemon/heatran <----- click on the link for more info about the Torment Heatran.

Sweeping is not a standard role for Ambipom... instead you want a Spin Blocker. A good idea I had in mind was a Dusknoir. Do not use it as a Tank, but instead...
Dusknoir@ Leftovers
Adamant
Pressure
252 HP / 252 Atk / 4 Def
~Substitute
~Focus Punch
~Shadow Sneak
~Fire Punch
This Dusknoir is seriously amazing. Your Opponent will predict a Will-o-Wisp like most Dusknoirs, but instead this one will either go for a Sub or Focus Puch. Shadow Sneak for priority and Fire Punch to take down Scizors...

Instead of Umbreon, I sugest a Spinner.... that would be up to you....