Here is my first post in Quality Control! I have used this set successfully in my main Trick Room team, and it works as a wonderful Revenge Killer or Wall Breaker with the right support.
Topic Title: Dragonite Trick Room Mixed Sweeper
http://www.smogon.com/dp/pokemon/dragonite
[SET]
name: Trick Room Mixed Sweeper (Specially Based)
move 1: Superpower
move 2: Fire Blast/Flamethrower
move 3: Ice Beam
move 4: Thunderbolt / Hidden Power Grass / Roost / Extremespeed
item: Life Orb
nature: Quiet
evs: 4 HP / 252 Atk / 252 SpA
ivs: 0 Spe
ivs for Hidden Power Grass: 30 Def / 30 SpA / 3 Spe
Why this set deserves to be on-site:
-Plays like traditional MixNite, but boasts full power Attack and Special Attack sets with no needed investment in Speed, making it a very fast wall breaker.
-Wide coverage; gets all elemental beams.
-Superpower is a virtual OHKO on Blissey, guaranteed with Stealth Rock Damage.
-Ice Beam 2HKO's Hippowdon.
-Currently no Trick Room set for Dragonite on-site.
-Unfortunately, suffers from Four Move-slot Syndrome, like traditional MixNite.
Additional Comments:
-Hidden Power Grass - Has a 94% chance to OHKO Swampert, surefire OHKO with Spikes/Stealth Rock Damage, but loses the ability to hit Gyarados hard.
-Roost - Helps recover damage from Stealth Rock, but loses a precious Trick Room turn.
-Extremespeed - Ensures a KO on crippled walls who outspeed Dragonite, even in Trick Room.
-Bulkier Spread: 136 HP / 116 Atk / 252 SpA - Same Attack as current MixNite set.
Teammates and Counters:
-This Dragonite works with any bulky Pokémon that can set up Trick Room, such as Porygon2, Slowbro, and Bronzong. Bronzong is notable for resisting Ice Shard and the ability to set up Stealth Rock, ensuring OHKO's on Blissey, Skarmory, and Swampert (with Hidden Power Grass). Bronzong can also set up Reflect or Light Screen to give Dragonite as much protection as possible. This works especially well with Roost to mitigate Stealth Rock and Life Orb damage.
-Scizor can take an Ice Shard from Weaville or Mamoswine and do serious damage with Life Orb powered Bullet Punch or Superpower.
-Claydol can set up Rapid Spin, Trick Room, and Stealth Rock, but shares an Ice weakness.
-Unfortunately, 4 Spe Blissey outspeeds this, even with minimal speed in Trick Room. However, an Ice Beam from Blissey will not KO Dragonite bar Critical Hit, and if Blissey somehow survives Superpower, you can hit Blissey back with an Extremespeed for the KO.
-Hippowdon outspeeds this in Trick Room, but as mentioned before, Ice Beam will always 2HKO.
Topic Title: Dragonite Trick Room Mixed Sweeper

http://www.smogon.com/dp/pokemon/dragonite
[SET]
name: Trick Room Mixed Sweeper (Specially Based)
move 1: Superpower
move 2: Fire Blast/Flamethrower
move 3: Ice Beam
move 4: Thunderbolt / Hidden Power Grass / Roost / Extremespeed
item: Life Orb
nature: Quiet
evs: 4 HP / 252 Atk / 252 SpA
ivs: 0 Spe
ivs for Hidden Power Grass: 30 Def / 30 SpA / 3 Spe
Why this set deserves to be on-site:
-Plays like traditional MixNite, but boasts full power Attack and Special Attack sets with no needed investment in Speed, making it a very fast wall breaker.
-Wide coverage; gets all elemental beams.
-Superpower is a virtual OHKO on Blissey, guaranteed with Stealth Rock Damage.
-Ice Beam 2HKO's Hippowdon.
-Currently no Trick Room set for Dragonite on-site.
-Unfortunately, suffers from Four Move-slot Syndrome, like traditional MixNite.
Additional Comments:
-Hidden Power Grass - Has a 94% chance to OHKO Swampert, surefire OHKO with Spikes/Stealth Rock Damage, but loses the ability to hit Gyarados hard.
-Roost - Helps recover damage from Stealth Rock, but loses a precious Trick Room turn.
-Extremespeed - Ensures a KO on crippled walls who outspeed Dragonite, even in Trick Room.
-Bulkier Spread: 136 HP / 116 Atk / 252 SpA - Same Attack as current MixNite set.
Teammates and Counters:
-This Dragonite works with any bulky Pokémon that can set up Trick Room, such as Porygon2, Slowbro, and Bronzong. Bronzong is notable for resisting Ice Shard and the ability to set up Stealth Rock, ensuring OHKO's on Blissey, Skarmory, and Swampert (with Hidden Power Grass). Bronzong can also set up Reflect or Light Screen to give Dragonite as much protection as possible. This works especially well with Roost to mitigate Stealth Rock and Life Orb damage.
-Scizor can take an Ice Shard from Weaville or Mamoswine and do serious damage with Life Orb powered Bullet Punch or Superpower.
-Claydol can set up Rapid Spin, Trick Room, and Stealth Rock, but shares an Ice weakness.
-Unfortunately, 4 Spe Blissey outspeeds this, even with minimal speed in Trick Room. However, an Ice Beam from Blissey will not KO Dragonite bar Critical Hit, and if Blissey somehow survives Superpower, you can hit Blissey back with an Extremespeed for the KO.
-Hippowdon outspeeds this in Trick Room, but as mentioned before, Ice Beam will always 2HKO.