First try at a competive uber team

[Heldigunner1]

Jirachi
Trickster
Jolly
Choice Band originally a scarf but backfired more often
Ev 4 hp/ 252 atk/ 252 spe
Trick
Iron Head
Body Slam
U-Turn

ParFlinch because that is what he does. Trick for set upers and supporters.

Sableye
The Annoyer
Impish
Leftovers
Prankster
Ev 252 hp/ 96 atk/ 160 def
Taunt
Will-o-Wisp
Shadow Sneak
Recover

Probably my favorite poke since getting Prankster. Cripples teams. Defeats almost every physical sweeper one on one except due to hax.

Groundon
The Supporter
Impish
EV 252 hp/ 96 def/ 160 def
Stealth Rock
Thunder Wave
Dragon Tail
Earthquake

Not much to say about a team supporter Groundon. Toxic can go in over E-quake if Lugia is too big of a problem.

Reshiram
Mid Game Sweeper
Hasty
Life Orb
4 atk/ 252 Spatk/ 252 def/
Flame Charge
Fusion Flare
Outrage
Draco Meteor

Mixed Sweeper. TurboBlaze gives perfect coverage. Flame Charge so you can out speed even max speed Scarf Kyogre. Draco Meteor is the main move. Once that is used up, Outrage until you either die or get a safe switch.

Mewtwo
Revenge Killer
Modest
Choice Scarf
4 hp/ 252 Spatk/ 252 spd
Trick
PsyStrike
Aurasphere
Shadow Ball

Revenge Killer with the ability to cripple pokes in the late game.

Arceus
Late Game Sweeper
Adament
Life Orb
4 hp/ 252 atk/ 252 spd
Sword Dance
Extreme Speed
Dragon Claw
Earthquake

Late Game Sweeper. Not much can deal with an Extreme Speed from this guy with a SD under his belt. E-Quake for Steels and Ghost without Levitate. D-Claw for the rest.

Any advice would be appreciated

[Blue Harvest]

Descriptions added! Unlocked and bumped!