Here's one set up sweeper
Rayquaza @ Life Orb/Lum Berry
Ability: Air Lock
Nature: Jolly
EVs: 252 Atk/252 Speed/4 SpD
- Outrage/Dragon Claw
- V-Create
- Extremespeed/Earthquake
- Dragon Dance
Come fourth the Sky Guardian, Rayquaza. It has very good Offensive stats. 150 in all stat IIRC. But it's real letdown that it's speed is 95.
Things such as Scarfed Palkia and Kyogre can handle it with Spacial Rend/DM and Ice Beam respectively. But what really helps is that its setup move, Dragon Dance, it raises its speed and attack by one stage that can outpace Rayquaza such as Scarfed Kyogre, Scarfed Palkia, Mewtwo, and Darkrai. Okay, maybe not Mewtwo and Darkrai since I didn't check. But two DD's up will, but not Scarfed variants. EVs to maximize it's Offensive Capabilities. 4 EVs go to SpD due to having a lot of Special Attackers. Jolly is for the speed. Air Lock is a blessing, but also a curse. V-Create won't be weaken by rained, but will not power up in Sun. Outrage is your STAB move of choice. But if you don't want to be confused, go with Dragon Claw, but Outrage is very important to get some kills. Extremespeed and Earthquake is your move of choice. ESpeed to weaken off weakened monsters, while EQ hits Heatran. You might want to use ESpeed if the team isn't weak to Heatran. Life Orb is to power up your moves. While Lum Berry to cure your Confusion from Outrage or get rid of status. Hazards are recommended. Get rid of Focus Sash Deoxys before they Ice Beam you, basically why you need ESpeed, unless you nabbed off enough DDs. Rapid Spin is very recommended. You don't want to take a lot of damage with Life Orb Recoil and SR damage.
And I would like to state one more thing: It has perfect due to Outrage/Dragon Claw + V-Create bar Heatran.
For those if you who don't know, Rayquaza can learn V-Create due to Event in Japan.