Diancie @ Power Weight
Ability: Clear Body
EVs: 248 HP / 252 Atk / 8 SpD
Brave Nature
IVs: 0 Spe
- Trick Room
- Diamond Storm
- Explosion
- Stone Edge
Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 248 HP / 8 Atk / 200 Def / 52 SpD
Sassy Nature
IVs: 0 Spe
- Stealth Rock
- Leech Seed
- Protect
- Gyro Ball
Suicune @ Choice Specs
Ability: Inner Focus
EVs: 252 HP / 252 Def / 4 SpA
Relaxed Nature
IVs: 0 Atk / 0 Spe
- Calm Mind
- Hydro Pump
- Reflect
- Toxic
Cresselia @ Leftovers
Ability: Levitate
EVs: 252 HP / 252 SpA / 4 SpD
Quiet Nature
IVs: 0 Atk / 0 Spe
- Calm Mind
- Trick Room
- Moonlight
- Psychic
Heatran @ Life Orb
Ability: Flash Fire
EVs: 252 Def / 252 SpA / 4 SpD
Quiet Nature
IVs: 0 Spe
- Earth Power
- Flash Cannon
- Heat Wave
- Magma Storm
Dusknoir @ Leftovers
Ability: Frisk
EVs: 252 HP / 4 SpA / 252 SpD
Sassy Nature
IVs: 0 Atk
- Trick Room
- Destiny Bond
- Shadow Ball
- Pain Split
This is a Trick Room balance team.
Diancie is a backup Trick-Roomer, and after it uses TR, it is generally paired with Dusknoir or Ferrothorn and then Explodes.
Ferrothorn is an entry hazard, with Stealth Rock to get make Fire types think twice before switching in.
Then it stalls, using Leech Seed+ Protect to annoy the heck out of people.
Suicine walls essentially most common Physical Attackers in Double OU tier, running a physical wall+ SpA set.
Cresselia is the main Trick-Roomer and uses Calm Mind and Moonlight to keep it health and bulky. Often, most SpAttackers will be lucky to 3HKO it, and Physical Attackers will 2HKO it only if its a super effective, with a few exceptions of MScizor and Scizor SD.
Heatran is pure SpA muscle. I chose Life Orb over Specs, because Specs is not a typical Heatran set.
Dusknoir is the runner-up TR user. I am thinking of using Custap Berry instead of Leftovers though, to ensure a Destiny Bond. It combines Pain Split then Shadow Ball to keep an equal balance. If things get rough, it destiny bonds its way out.
Please give me feedback, and don't afraid to be harsh on any of the sets! Thank you!