My first attempt at OU

[Coontank!]

Hippowdon @ Leftovers; Impish
Sand Stream
252 HP / 168 Def / 88 SpDef
-Stealth Rock
-Earthquake
-Slack Off
-Stone Edge
Set up Stealth Rock, attack, and heal as I see fit.

Empoleon @ Petaya Berry; Modest
Torrent
12 HP / 252 SpAtk / 244 Spd
-Surf
-Agility
-Ice Beam
-Substitute
A more effective way to deal with some of the team's weaknesses. Empoleon resists Ice,

Lucario @ Life Orb; Timid
Inner Focus
4 HP / 252 SpAtk / 252 Spd
-Vaccum Wave
-Aura Sphere
-Shadow Ball
-Dragon Pulse
Just a simple Special attacker. Not an SD Lucario because this team need more offensively from the Special end of things.

Tyranitar @ Leftovers; Brave
Sand Stream
252 HP / 52 Atk / 176 SpAtk / 28 Spd
-Substitute
-Focus Punch
-Dark Pulse
-Thunderbolt
Tyraniboah set, nothing too surprising. Just a little scary.

Torterra @ Leftovers; Impish
Overgrow
212 HP / 252 Def / 44 Spd
-Wood Hammer
-Earthquake
-Leech Seed
-Protect
Torterra can easily switch into Water type attacks that are sure to come at this team.

Skarmory @ Leftovers; Impish
Keen Eye
252 HP / 64 Atk / 176 Def / 16 Spe
-Whirlwind
-Brave Bird
-Toxic
-Spikes
Spikes damage to compliment Stealth Rock, Toxic for even more residual damage. Whirlwind to spread.

 

[Phoenicks]

I'm not much of a competitive battler, but I think I can point out the glaring flaws. 4 of your Pokemon are weak to water, and only Cacturn can switch into a water attack with a resistance. Also, you should switch out one of your 3 sweepers for another, different tank with leftovers, like Cresselia or Blissey. Also, you have 4 water weaknesses, and 3 in grass, fighting and ground. Switch out 1 or two of your sandstorm resistant pokemon. It gives you better typing. Lastly, two pokemon with Sand Stream is overkill, you should probably change one of them. I hope this helps.

 

[ShinyFlareon]

Well, as you said yourself, you've got a decent-sized Fighting weakness. Phoenicks also pointed out a water weakness, but that sort of comes with the territory if you're running a Sandstorm team. Don't worry about having more than one pokemon setting up Sandstorm -- it's insurance, in case one gets killed/otherwise put out of commission.

Your Rampardos needs those speed boosts from Gliscor more than Lucario does. I'd even say try Life Orb on it instead of a Choice item, for two reasons. The first of which is that Rampardos has crappy defenses; it won't be lasting long anyway, and it definitely cannot take repeated switching in and out due to being locked into one move. The second, and less pressing reason, is that Rampardos is insanely slow. Lucario and Gliscor actually have the same base speed, so I really do think that those Rock Polishes are better suited sent Rampardos' way than Lucario's. Everything else looks pretty solid.

 

[Wiilio]

You have a huge Infernape weakness. Add a Vaporeon perhaps? Hippowdon is the only thing that can stand up to SD Lucario, and if it has just one SD Hippowdon can't switch in on anything (Unless the Lucario in question just so happens to have Stone Edge over Ice Punch, which they rarely do anymore). The typical Scizor also hits 4/6 team members very hard and Hippowdon and Gliscor can't really do all that much to it. A Scarfed Heatran would do this team some good. For Gliscor's nature I'm sure you mean Jolly? I'd put Lucario's SpD EVs into Speed, and I would also swap its Defense for HP. That will make it bulkier for both Defenses (Sort of). You'll have to try it out for yourself; personally I don't think a bulky Lucario can work.

 

[Coontank!]

Thanks so much for looking this over, guys. I edited the first post. Any better? Tell me what you think.

 

[ungulateman]

Well, if Suicune comes in and it has Ice Beam / Surf (Quite a few Cunes run both), your team is dead pretty quickly. Try to get someone with Toxic, or Skarmory can Roar it. (Skarmory also helps your Ground weakness.)

Skarmory @ Shed Shell
Impish / Keen Eye
252 HP / 64 Atk / 176 Def / 16 Spe
Brave Bird
Roost
Spikes / Stealth Rock
Whirlwind

Yeah, a Spiker Skarmory would give you some help against Grass-types as well.

 

[Coontank!]

Thanks, ungulateman, I really like the idea of Skarmory.

Try to get someone with Toxic, or Skarmory can Roar it.

How about both?

Skarmory @ Shed Shell; Impish
Keen Eye
252 HP / 64 Atk / 176 Def / 16 Spe
Brave Bird
Roost
Toxic
Whirlwind


Idk who have this replace, though. Torterra probably?

 

[ungulateman]

That works, although a lot of teams would prefer to have both SR and Spikes out.

 

[Coontank!]

Yeah, I agree. I edited the first post:
-Skarmory
-added Empoleon
-edited Lucario's and Hippowdon's movesets

 

[Coontank!]

Just bumping this to see if I get any last suggestions or comments. I'm gonna start breeding this week.