This is my first RMT on Smogon, and this team I've tried on Wi-Fi, and it's done relatively well for me. However, I still feel like there's something lacking, or something just doesn't feel right about this team.
Bronzong @ Leftovers
Ability: Levitate
Nature: Sassy ( -Spe, + SpD)
EVs: 252 HP / 86 Atk / 80 Def / 92 SpD
~Gyro Ball
~Reflect
~Earthquake
~Stealth Rock
This guy has always been my lead, because he always gets a Stealth Rock which takes off enough HP for my offense to score 1-2 hit KOs. I chose to forego Hypnosis, because I plan to use this team in Platinum as well, and the fact that the accuracy of Hypnosis has been set back to 60 is a real turn off for me. So, I chose Reflect for the sake of team support, not to mention that I also have another team member ready for a Light Screen too.
Gyarados @ Leftovers
Ability: Intimidate
Nature: Adamant (+Atk, -SpA)
EVs: 156 HP / 108 Atk / 100 Def / 144 Spe
~Dragon Dance
~Waterfall
~Stone Edge
~Taunt
The BulkyGyarados set, which I chose because the Standard Offensive set is more suited for late game, which is what I'm saving Gengar and Flygon for. Personally I think I would like to use this Gyarados after either Bronzong or Latias are beaten, since his mix of defense and offense in my opinion make a good transition to the later game.
Scizor @ Life Orb
Ability: Technician
Nature: Adamant (+Atk, - SpA)
EVs: 32 HP / 252 Atk / 224 Spe
~Swords Dance
~Bullet Punch
~Brick Break
~Roost
Not much to say here, he's my main Physical Sweeper meant to get rid of some of Gengar's counters and some damage of his own. I chose Roost over Quick Attack for longevity. Gengar Counters that Scizor can take care of are Tyranitar, Weavile, and variations of Blissey lacking Flamethrower.I chose BB over Superpower, because I don't want any screeners to set up, which could hamper Gengar and Flygon late game.
Latias@ Light Clay
Ability: Levitate
Nature: Timid (+Spe, -Atk)
EVs: 252 HP / 218 Def / 28 Spe
~HP Fire
~Light Screen
~Wish
~Dragon Pulse
Light Screen Special wall that replaces Zapdos, and also Pseudo-Passes wish. Still carries a Fire Move to take care of Steel/Grass types. HP Fire replaced Reflect due to the fact that Bronzong already has it. Wish for the purpose of Pseudo-Passing recovery. Sure, he may give my team a second Ice weakness, but I'm confident that with a Light Screen up it can take the Ice Beams/HP Ices. I chose the EVs, since I wanted my Latias to have higher Def.
Gengar @ Choice Specs
Ability: Levitate
Nature: Timid (+Spe, -Atk)
EVs: 4 HP / 252 SpA / 252 Spe
~Shadow Ball
~Thunderbolt
~HP Ice
~Trick
SpecsGar set, and basically the star of this team, and my absolute favorite Pokemon in the world. I never liked Focus Blast's low accuracy, as very often it missed. So, I chose to put HP ice for the sake of better type coverage. Depending on the situation, It's either this guy or Flygon last as a revenge killer.
Flygon @ Choice Scarf
Ability: Levitate
Nature:Adamant (+Atk, -SpA)
EVs: 80 HP / 252 Atk / 176 Spe
~Earthquake
~Outrage
~Stone Edge
~U-Turn
New Revenge Kill replacing Porygon-Z, thanks to the input of animengai. Gengar pretty much has BoltBeam covered, so this set also gives me more coverage. Also, he may have more weaknesses than PZ, but that is outweighed by Flygon's great typing. Earthquake gets rid of Heatran and Steels much like PZ's old HP fighting was supposed to. I chose Stone Edge because a lot of my team is Gyarados-weak, and SE is good for revenge killing it.

Bronzong @ Leftovers
Ability: Levitate
Nature: Sassy ( -Spe, + SpD)
EVs: 252 HP / 86 Atk / 80 Def / 92 SpD
~Gyro Ball
~Reflect
~Earthquake
~Stealth Rock
This guy has always been my lead, because he always gets a Stealth Rock which takes off enough HP for my offense to score 1-2 hit KOs. I chose to forego Hypnosis, because I plan to use this team in Platinum as well, and the fact that the accuracy of Hypnosis has been set back to 60 is a real turn off for me. So, I chose Reflect for the sake of team support, not to mention that I also have another team member ready for a Light Screen too.
Gyarados @ Leftovers
Ability: Intimidate
Nature: Adamant (+Atk, -SpA)
EVs: 156 HP / 108 Atk / 100 Def / 144 Spe
~Dragon Dance
~Waterfall
~Stone Edge
~Taunt
The BulkyGyarados set, which I chose because the Standard Offensive set is more suited for late game, which is what I'm saving Gengar and Flygon for. Personally I think I would like to use this Gyarados after either Bronzong or Latias are beaten, since his mix of defense and offense in my opinion make a good transition to the later game.

Scizor @ Life Orb
Ability: Technician
Nature: Adamant (+Atk, - SpA)
EVs: 32 HP / 252 Atk / 224 Spe
~Swords Dance
~Bullet Punch
~Brick Break
~Roost
Not much to say here, he's my main Physical Sweeper meant to get rid of some of Gengar's counters and some damage of his own. I chose Roost over Quick Attack for longevity. Gengar Counters that Scizor can take care of are Tyranitar, Weavile, and variations of Blissey lacking Flamethrower.I chose BB over Superpower, because I don't want any screeners to set up, which could hamper Gengar and Flygon late game.

Latias@ Light Clay
Ability: Levitate
Nature: Timid (+Spe, -Atk)
EVs: 252 HP / 218 Def / 28 Spe
~HP Fire
~Light Screen
~Wish
~Dragon Pulse
Light Screen Special wall that replaces Zapdos, and also Pseudo-Passes wish. Still carries a Fire Move to take care of Steel/Grass types. HP Fire replaced Reflect due to the fact that Bronzong already has it. Wish for the purpose of Pseudo-Passing recovery. Sure, he may give my team a second Ice weakness, but I'm confident that with a Light Screen up it can take the Ice Beams/HP Ices. I chose the EVs, since I wanted my Latias to have higher Def.

Gengar @ Choice Specs
Ability: Levitate
Nature: Timid (+Spe, -Atk)
EVs: 4 HP / 252 SpA / 252 Spe
~Shadow Ball
~Thunderbolt
~HP Ice
~Trick
SpecsGar set, and basically the star of this team, and my absolute favorite Pokemon in the world. I never liked Focus Blast's low accuracy, as very often it missed. So, I chose to put HP ice for the sake of better type coverage. Depending on the situation, It's either this guy or Flygon last as a revenge killer.

Flygon @ Choice Scarf
Ability: Levitate
Nature:Adamant (+Atk, -SpA)
EVs: 80 HP / 252 Atk / 176 Spe
~Earthquake
~Outrage
~Stone Edge
~U-Turn
New Revenge Kill replacing Porygon-Z, thanks to the input of animengai. Gengar pretty much has BoltBeam covered, so this set also gives me more coverage. Also, he may have more weaknesses than PZ, but that is outweighed by Flygon's great typing. Earthquake gets rid of Heatran and Steels much like PZ's old HP fighting was supposed to. I chose Stone Edge because a lot of my team is Gyarados-weak, and SE is good for revenge killing it.