My Uber team
I’m not a pro with team building but here goes…
Lead
Deoxys-S@ Focus Sash
Jolly (+Speed/-Sp. Attack)
Pressure
4Hp/252Atk/252Spe
-Stealth Rock
-Taunt
-Superpower
-ExtremeSpeed
I like this type of lead with only one plan of action:
A superfast freak that shuts down enemy leads with Taunt, sets up Stealth Rocks and damages as much as it can with Superpower and ExtremeSpeed before going bye-bye. Only ghosts wall its attacks, but its main purpose is to prevent others from setting hazards and lay its own and not to sweep teams. Max speed is an obligation, as it is max attack if I want some damage to be done. I like my leads with some “fat” too, so the 4 Ev’s go to HP.
Weakness covering:
Bug: Ho-oh /Giratina
Dark: None
Ghost: None
Physical Sweeper and “Sets up the sun”
Groudon@ Leftovers
Adamant (+Attack/-Sp. Attack)
Drought
116Hp/252Atk/140Spe
-Earthquake
-Stone Edge
-Rock Polish
-Fire Punch
Groudon is always Ho-oh’s best friend, unless an enemy Kyogre shows up, but in that case Palkia will help get rid of that “pest”, so that Groudon can shine again. With Rock Polish, this monster can boost its speed sky high and start to sweep fragile low defense ubers (almost all ubers are physically weak) and every other pokemon that stands in the way. Earthquake is obvious for stab and type coverage. Stone Edge is for type coverage also. Fire Punch is the strongest physical fire move Groudon learns, it gains a boost from the weather and it’s capable of crushing grass types too. HP Ev’s are there so that Groudon can Rock Polish without suffering too much damage. Attack was maxed out to sweep with ease, and the speed Ev’s allow it to outrun pokemon with 100 base speed with no other investment.
Weakness coverage:
-Ice: None
-Water: Palkia/Giratina
-Grass: Ho-oh/Giratina
Mixed Sweeper
Ho-oh@ Life Orb
Relaxed (+Speed/- Defense)
Pressure
100Hp/100Atk/176Sp.Atk/132Spe
-Sacred Fire
-Solarbeam
-Roost
-Hidden Power Ice
My personal favorite, the legendary rainbow bird: Ho-oh! Thanks to Groudon’s Drought, the sun always shines and this beast can sweep almost everything with Sacred Fire, unless it’s fire resistant, but even in that situation, a 50% burn chance aren’t very nice odds for an adversary. Solarbeam doesn’t need to recharge when the sun’s up, so it can handle several incoming water and rock types. Roost helps Ho-oh refill its HP loss to recoil and damage. Hidden Power Ice deals with dragons that would otherwise resist my set. It needed some speed and power boost to sweep better, so Ev’s were placed in both attack and special attack and speed also. To absorb the recoil better, Ev’s went to HP too.
Weakness coverage:
-Rock: Groudon
-Electric: Groudon/Giratina
-Water: Palkia/Giratina
Special Sweeper
Palkia@ Lustrous Orb
Modest (+Sp. Attack/-Attack)
Pressure
252Sp.Atk/252Spe
-Spacial Rend
-Thunder
-Fire Blast
-Hydro Pump
This monstrous beast is my answer to enemy nosy Kyogre and is also a special sweeper. If a Kyogre comes in and ruins my sunny weather, Thunder will deal with him. Since it never misses in the rain it’s really bad news for the whale. The drizzle also helps Hydro Pump (a good addition that came with HG and SS) boosting its damage. If there are no climate changes, and it’s still hot, Fire Blast powers up and burns foes to cinders. Spacial Rend literally rips through almost everything whether it’s sunny or rainy. Of course, since it’s a special sweeper, max speed and special attack was a must.
Weakness cover:
-Dragon: None
Physical Wall
Giratina@ Leftovers
Impish (+Defense/-Sp. Attack)
Pressure
252Hp/4Atk/252Def
-Will-O-Wisp
-Shadow Force
-Earthquake
-Rest
Giratina is here to block annoying rapid spinners and to stall physical sweepers. The mighty shadow monster even resists the most powerful physical moves such as Earthquake and Stone Edge sent from the toughest physical sweepers like Tyranitar and Gyarados. Even though a boosted Crunch or Outrage hurt a lot, Will-O-Wisp shortens their power and slowly hurts the foes, too. Shadow Force is one of my favorite moves and it’s also very powerful. It has a waiting turn, but Giratina’s invulnerable while waiting and receives Leftovers support also. Even if the target is ghost resistant (normal type exception) it still hurts being hit with a 120 power STAB move. Earthquake is for pokemon that resist or are immune to Shadow Force. Rest removes status and replenishes health. I don’t like Sleep Talk in this set because I don’t like to leave these choices to random choosing. It may also surprise the adversary since I don’t have a move slot with Sleep Talk.
Weakness Coverage:
-Dragon: None
-Ice: None
-Ghost: None
-Dark: None
Revenge Killer
Mewtwo@ Choice Scarf
Modest (+Sp. Attack/-Attack)
Pressure
4Hp/252Sp.Atk/252Spe
-Ice Beam
-Aura Sphere
-Shadow Ball
-Thunderbolt
Mewtwo is a fast special revenge killer, capable of crushing any dragon in the game and a lot of other menaces too. Ice Beam deals with them pesky dragons that might have damaged my team, Aura Sphere and Shadow Ball cover most of my team’s other weaknesses and Thunderbolt eliminates flying type enemies and never misses regardless the weather. Since it focuses on the special side sp. attack was maxed and speed is obvious for a revenge killer.
Weakness coverage:
-Ghost: None
-Bug: Ho-oh/ Giratina
-Dark: None
That's all for my team and rate nicely please...
I thank any rating you give me.

Cheers =)