Spill the beans on your best team right now, people tell you how you can improve it or gush at how cool it is. Here's my main team for Ubers.

>yes is ripped straight off my Smogon cache

Grimm (Giratina-Origin) @ Griseous Orb
Ability: Levitate
Shiny: Yes
EVs: 248 Atk / 248 Def / 12 Spe
Adamant Nature
- Defog
- Shadow Sneak
- Dragon Tail
- Shadow Force

Loogi (Lugia) @ Leftovers
Ability: Multiscale
EVs: 252 HP / 120 Def / 136 Spe
Bold Nature
- Roost
- Whirlwind
- Toxic
- Ice Beam

Ultralord (Xerneas) @ Power Herb
Ability: Fairy Aura
EVs: 184 HP / 28 Def / 252 SpA / 44 Spe
Modest Nature
- Geomancy
- Moonblast
- Thunder
- Focus Blast

Beastender (Dialga) @ Shuca Berry
Ability: Pressure
EVs: 244 HP / 252 SpA / 12 Spe
Modest Nature
IVs: 0 Atk
- Draco Meteor
- Fire Blast
- Flash Cannon
- Stealth Rock

Zaphod (Mewtwo) @ Mewtwonite X
Ability: Unnerve
EVs: 112 Atk / 144 Def / 252 Spe
Jolly Nature
- Earthquake
- Low Kick
- Ice Punch
- Taunt

Clam Chowder (Cloyster) (M) @ Focus Sash
Ability: Skill Link
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Shell Smash
- Icicle Spear
- Rock Blast
- Explosion