Ok, my first time rating... but I'm OK at Ubers.
Im gonna switch out a couple of Pokemon because thy really do not belong in Ubers. these pokemons are Breloom, Electrode, and Wailord. they will be switched out for Lugia, Forretress, and Palkia. Also, Arceus will have a different form. Let's get started...
EV's: 252 HP, 100 Defense, 154 Attack
So, what we want here is a SleepTalk set. Rest is your form of recovery. Sleep talk is pretty obvious. Bulk Up is awesome. This dude will be taking physical hits like nothing after 2-3 bulk-ups. Outrage is your attacking move, so 1.) you don't become Taunt bait and 2.) hit everything like a truck. I mean, nothing will be taking an Outrage easily if you got in 2-3 Bulk-ups. The blobs (Chansey and Blissey) have Horrible defense, Giratina is weak to Dragon, and Multiscale Lugia will still get hit pretty hard by this. The only things you should watch out for are Groudon and something with a Special Fighting move. other than that, your set to go.
EV's: 200 HP, 252 Sp.Def, 56 spe
Substitute/ Ice Beam/ Whirlwind
Alright, here's my freakin baby. One of the most blessed pokemon's with arguably one of the best abilities in the book, Multiscale.
So T-wave is there to make common scarfers such as Palkia and Terrakion (sometimes Mewtwo) become easier to deal with. come in on a Palkia's Earth Power, Terrakion's EQ or Close Combat, and a Mewtwo's Psystrike, and you get a free T-Wave on them. If not, the next pokemon in line will recieve it. The Speed EV's give it just enough speed to outrun and T-wave a couple of things. Roost is just awesome on Lugia. 50% percent of its health is not joke. Now add the leftovers revovery and you have some nice, reliable, recovery. Earth Power is not become death fodder (if you chose substitute or Whirlwind)) and helps take care of some threats, such as Terrakion (if paralyzed). Sub is just to piss of people when the use a weak attack against Lugia, put up a sub, heal it of next turn with roost, and you basically become quite invincible. Ice Beam is if you want to have 2 attacking moves, and mess aroung with all the Dragon types lurking in Ubers. Whirlwind is here to screw the other team over with Entry Hazards, which leads us to our next pokemon... the god of hazard setting...
Item: Red card/ Leftovers/ Lum Berry
EV's: 252 HP, 248 Defense, 8 attack
Alright, if you are like me and get Haxed every time this dude is out, then choose Lum Berry as your item. Anyways, Spikes and Stealth rock are to put up hazards (DUH). Rapid Spin ice nice on this guy, to help your team get rid of EH (entry hazards). Earthquake is just there to not make you taunt bait or to pick off a weak opponent after EH's are set up.
EV's: 252 Speed, 252 Sp.Attack, 4 def
Ability: Bad Dreams
Ok, a Focus Sash set. Dark Void is for Obvious reasons... Nasty Plot is to set up while they sleep or to get a free boost while they switch out. Dark pulse is STAB and Focus Blast is for coverage. Note that nothing in OU or Ubers resists a Fighting + Dark combo. Only Herracross does, who lurks in UU. So you should be safe.
Item: Choice scarf
EV's: 252 speed, 252 Sp.attack, 4 HP
Spacial Rend/ Draco Meteor
This dude is Possibly one of the Best scarfers in Ubers. And it's notable why when it has a 150 Base Special attack stat. Well, Fire Blast is coverage. Hydro Pump and Surf are STAB (only choose one water move). While Hydro Pum has mor Power, Surf has more reliability. THunderbolt is to make sure that Kyogre is not a threat to this team. Spacial Rend and Draco Meteor are Stab. Note that while Draco Meteor has mor power, it lowers your Sp.attack stat. knowing that Palkia is scarfed, he wont be staying in long if a faster thrat comes along. But Still, Spacial Rend is prefered here, since it's more reliable, and has a high crit rate.
Now, for the Arceus we have all been waiting for...
Item: Life Orb/Leftovers
EV's: 252 attack, 244HP, 12 speed.
Pretty basic, yet destructive XtremeKiller Arceus set. Swords Dance just lets you Kill everything around you. Recover is only necessary if you are running Life Orb and dont want to let this dude die quickly. Shadow claw is to make sure that Giratina and Lugia dont come out and start trolling, which they are very good at. EQ is here to deal with Pest such as Reshiram, Zekrom, and Heatran. Extremespeed is just the icing on the cake, being (arguably) the best Normal move that Arceus an have.Also, Priority PWNS in Ubers. The 12 speed EV's were her so you could outspeed tricky arceus that use * speed IV's to outrun the original 4 speed EV XtremeKiller Arceus.
One thing that should be Mentioned is a fighting weakness, but not that bad...
there ya go. hope you like this.