I've been getting alot of questions about the team I used at Worlds and how it worked so here is a quick rundown of what it was:
Groudon
~Brave, 0Speed
252HP/252Atk/6Def
*Earthquake
*Rock Slide
*Protect
*Swords Dance
Jumpluff
~Jolly
252HP/252Speed/6SpDef
*Sleep Powder
*Protect
*Bounce
*Encore
Dialga
~Quiet
252HP/252SpAtk
*Dragon Pulse
*Trick Room
*Protect
*Flamethrower
Abomasnow
~Quiet
252Spatk/252HP
*Blizzard
*HP Fire
*Protect
*Grass Knot
Mewtwo
~Sassy
252HP/236Spdef
*Trick Room
*Selfdestruct
*Blizzard
*Protect
Parasect
~Brave
252HP/252Atk
*Spore
*Seed Bomb
*Protect
*X-Scissor
Items/Pokemon that use said item:
Iron Ball - Groudon, Mewtwo, Abomasnow
Life Orb - Dialga, Abomasnow, Parasect
Focus Sash - Jumpluff, Parasect
Sitrus Berry - Dialga, Abomasnow
Yache Berry - Jumpluff, Parasect
This team may look weird to you, but it's something that andrea and I have been playing around with for months. Groudon/Jumpluff is a typical lead, distrupting the opponenet with sleep powder and encore. The constant threat of disruption makes people double target Jumpluff and allows me to set up Swords Dance. I try to preserve Groudon until Jumpluff dies so Dialga can come in and Trick Room. From there, I play it by ear and play around with a slow Groudon and Dialga. The last Pokemon for this team can either be Abomasnow or Parasect. Abomasnow works obvious in Trick Room, but Parasect is what makes this mode shine. Jumpluff wastes opposing Lums/Chestos so that Parasect can Spore without worry. Dialga/Parasect is amazing pair and I will get into that more when I post my warstory.
The second mode of this team is what catches people off guard. I run a slow, 0 speed Iron Ball Mewtwo to set up a Trick Room. It's paired with Abomasnow to fake an Abomatwo lead. Blizzard is there in case I want to attack. I never used it once. Mewtwo is EV'ed to take Spouts and Specs Dracos and Trick Room after. Once it's done, it booms and lets either dialga or parasect have all the fun.
I played with maybe 12 different combinations of Pokemon/Items this weekend, each with it's advantages and disadvantages. Life Orb Parasect was definitely my MVP.
I'll do a more indepth analysis when I'm not tired as balls.