Hello Smogon! This is my first OU team and I would like your help to make it better. My idea, though I sincerely doubt its an original one, is to create a team of super fast pokemon with high attack that use volt switch and u-turn to switch into pokemon that are resistant against foes' attacks.
Onto the team:
Zapdos @ Life Orb
Ability: Pressure
EV's: 252 SpA/ 252 Spe/ 4 Hp
Nature: Naive
-Thunderbolt
-Heatwave
-Hidden Power (Grass)
-U-Turn
My favorite pokemon from Generation 1. Zapdos, alongside Scizor and Rotom-W, are able to resist all 17 pokemon types. Together they are the fundamental rotation of my team. Zapdos's EV's and skill-set seem pretty standard for a special sweeper. I'm not happy that his Timid nature weakens the U-turn, but I've learned the hard way that you can't rely on Volt Switch with all of the ground type pokemon in today's metagame. I think his speed is high enough as it is, but as my lead I have considered giving him choice scarf.
Scizor @ Choice Band
Ability: Technician
EV's: 252 Spe/ 252 Atk/ 4 Hp
Nature: Jolly
-U-Turn
-Bullet Punch
-Superpower
-Pursuit
I believe this is a pretty standard scizor set. With scarf he can out-speed Lucario, Starmie, Gengar, Tyranitar,Heatran, and the flying jets. I've seen a lot of those pokemon around lately and I am glad scizor is there to take them out.
Rotom-W @ Choice Scarf
Ability: Levitate
EV's: 252 SpA/ 252 Spe/ 4 Hp
Nature: Modest
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Trick
Another standard EV set. I've had a problem in the past with pokemon that love to power themselves up behind a substitute, so I've equipped Rotom with trick to minimize that threat (not 100% if that actually works though o.O).
Breloom @ Toxic Orb
Ability: Poison Heal
EV's: 252 Spe/ 252 Atk/ 4 Hp
Nature: Jolly
-Spore
-Substitute
-Focus Punch
-Seed Bomb
Breloom is a monster. Though not a switcher himself, his ability to protect himself w/ a sub or sleep condition coupled with the focus punch makes him a force to be reckoned with. However, he doesn't really fit into what I'm trying to do with this team. His typing isn't good and I wouldn't mind replacing him.
Jirachi @ Leftovers
Ability: Serene Grace
EV's: 240 Hp/ 160 Def/ 76 SpD/ 32 Spe
Nature: Impish
-U-Turn
-Wish
-Thunder Wave
-Iron Head
Jirachi's purpose on this team is to slow down the opponent with some paralysis, then Wish and U-turn out of combat to replenish the Hp of his comrades. He's the healer of the group and I really like the synergy with all the switching.
Donphan @ Leftovers
Ability: Sturdy
EV's: 252 HP/ 188 Atk/ 68 Def
Nature: Adamant
-Rapid Spin
-Stealth Rock
-Earthquake
-Assurance
My team switches out a lot. Obviously, that makes me susceptible to entry hazards so I am obliged to keep a rapid spinner. My constant switches also force the opponent to switch out frequently, so I appreciate Donphan's ability to stealth rock. I think his moveset is solid, but I may was to reconsider his EV distribution or perhaps switch him out with another pokemon entirely that fulfills the same purpose.
I lose a lot. I've only been playing online/ competitively for 5 days, and I win maybe one in every 4 matches. My fundamental problem is my inexperience and although you folks can't help me play, you can help me better design the team I am working with. I truly appreciate any feedback and completely encourage any constructive criticism. Thank you for taking the time to read this and help me out.
P.S. The team's colors are themed after In N' Out burger, if anyone gets that :D
Onto the team:

Zapdos @ Life Orb
Ability: Pressure
EV's: 252 SpA/ 252 Spe/ 4 Hp
Nature: Naive
-Thunderbolt
-Heatwave
-Hidden Power (Grass)
-U-Turn
My favorite pokemon from Generation 1. Zapdos, alongside Scizor and Rotom-W, are able to resist all 17 pokemon types. Together they are the fundamental rotation of my team. Zapdos's EV's and skill-set seem pretty standard for a special sweeper. I'm not happy that his Timid nature weakens the U-turn, but I've learned the hard way that you can't rely on Volt Switch with all of the ground type pokemon in today's metagame. I think his speed is high enough as it is, but as my lead I have considered giving him choice scarf.

Scizor @ Choice Band
Ability: Technician
EV's: 252 Spe/ 252 Atk/ 4 Hp
Nature: Jolly
-U-Turn
-Bullet Punch
-Superpower
-Pursuit
I believe this is a pretty standard scizor set. With scarf he can out-speed Lucario, Starmie, Gengar, Tyranitar,Heatran, and the flying jets. I've seen a lot of those pokemon around lately and I am glad scizor is there to take them out.

Rotom-W @ Choice Scarf
Ability: Levitate
EV's: 252 SpA/ 252 Spe/ 4 Hp
Nature: Modest
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Trick
Another standard EV set. I've had a problem in the past with pokemon that love to power themselves up behind a substitute, so I've equipped Rotom with trick to minimize that threat (not 100% if that actually works though o.O).

Breloom @ Toxic Orb
Ability: Poison Heal
EV's: 252 Spe/ 252 Atk/ 4 Hp
Nature: Jolly
-Spore
-Substitute
-Focus Punch
-Seed Bomb
Breloom is a monster. Though not a switcher himself, his ability to protect himself w/ a sub or sleep condition coupled with the focus punch makes him a force to be reckoned with. However, he doesn't really fit into what I'm trying to do with this team. His typing isn't good and I wouldn't mind replacing him.

Jirachi @ Leftovers
Ability: Serene Grace
EV's: 240 Hp/ 160 Def/ 76 SpD/ 32 Spe
Nature: Impish
-U-Turn
-Wish
-Thunder Wave
-Iron Head
Jirachi's purpose on this team is to slow down the opponent with some paralysis, then Wish and U-turn out of combat to replenish the Hp of his comrades. He's the healer of the group and I really like the synergy with all the switching.

Donphan @ Leftovers
Ability: Sturdy
EV's: 252 HP/ 188 Atk/ 68 Def
Nature: Adamant
-Rapid Spin
-Stealth Rock
-Earthquake
-Assurance
My team switches out a lot. Obviously, that makes me susceptible to entry hazards so I am obliged to keep a rapid spinner. My constant switches also force the opponent to switch out frequently, so I appreciate Donphan's ability to stealth rock. I think his moveset is solid, but I may was to reconsider his EV distribution or perhaps switch him out with another pokemon entirely that fulfills the same purpose.
I lose a lot. I've only been playing online/ competitively for 5 days, and I win maybe one in every 4 matches. My fundamental problem is my inexperience and although you folks can't help me play, you can help me better design the team I am working with. I truly appreciate any feedback and completely encourage any constructive criticism. Thank you for taking the time to read this and help me out.
P.S. The team's colors are themed after In N' Out burger, if anyone gets that :D