ORAS Ubers I made this team a week ago and so far its doing good...

[thepiplupoverlord]

Klefki @ Leftovers
Ability: Prankster
Shiny: Yes
EVs: 252 HP / 108 Def / 8 SpA / 140 SpD
Modest Nature
IVs: 0 Atk
- Thunder Wave
- Spikes
- Flash Cannon
- Magic Coat

Arceus @ Choice Specs
Ability: Multitype
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Earth Power
- Psychic
- Judgment
- Draco Meteor

Groudon-Primal @ Red Orb
Ability: Desolate Land
EVs: 248 HP / 252 Atk / 8 SpA
Lonely Nature
- Precipice Blades
- Fire Blast
- Solar Beam
- Dragon Tail

Jirachi @ Choice Scarf
Ability: Serene Grace
EVs: 4 SpD / 252 Spe
Jolly Nature
- Iron Head
- Stealth Rock
- Ice Punch
- U-turn

Diancie-Mega @ Diancite
Ability: Magic Bounce
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Moonblast
- Diamond Storm
- Protect
- Calm Mind

Palkia @ Life Orb
Ability: Pressure
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Spacial Rend
- Focus Blast
- Hydro Pump
- Ice Beam

 

[Fireburn]

I moved this to the RMT forum thepiplupoverlord, but you will need to add 3 lines of description per Pokemon since your thread will likely be locked if you don't.