This team lost just once 5-6. I think it's perfect to beat lots of teams in the current metagame. So here's the team:
Leader: Jolly Ambipom @ Life Orb
Ability: Technician
EV: 6 HP / 252 Atk / 252 Spe
-Fake Out
-Return
-Payback (I'll substitute it with pursuit when i have the chance)
-Aerial Ace
Very useful lead/physical sweeper. Fake out and Return do a lot o damage since 1st turn and also Fake Out make the foe to flinch. Payback(Pursuit) is for gengar and all the pokes that don't take enough damage from the normal moves. Arial Ace is for the fighting one that think they switch in for free. Also the ability of Ambipom helps this.
Special Sweeper: Modest Azelf @ Expert Belt
EV: 6 HP / 252 SAtk / 252 Spe
-Nasty Plot
-Psychic
-Thunderbolt
-Grass Knot
My special sweeper. After just one nasty plot he can ohko a lot of people. He's also hard to take down with one shot ( he survived a thunderbolt of Zapdos and a SpecDragonite), so I think it's perfect to do lot of damage. I prefered thunderbolt over fire blast because dragonite and infernape have already fire moves and I need some electric moves to counter Gyrados or some annoying waters.
Physical Wall: Adamant Metagross @ Leftovers
EV: 58 HP / 252 Atk / 200 Def
-Meteor Mash
-Pursuit
-Eathquake
-Explosion
I think this is one of the biggest surprise in my team. With its incredible Defense Metagross can take a lot of physical damage and it's really hard to ohko him even with special attack (except the fire moves). When his Hp are low he explodes causing instantly death ( I killed even a cursed Swampert with full HP)
Special Wall:Calm Milotic @ Leftovers
EV: 124 HP / 252 Def / 16 SAtk / 116 SDef
-Surf
-Ice Beam
-Rest
-Sleep Talk
My special wall. It's nothing special but it works well against a lot of pokemon, even dragons that don't ohko him even with a thunderbolt ( but a roserade lifestorm does)
Mixed Sweeper/Revenge Killer: Naive Infernape @ Choice Scarf
EV: 252 Atk / 252 SAtk / 6 Spe
-Grass Knot
-Flare Blitz
-Hidden Power [Ice]
-Close Combat
My pride. Why a choice scarf on Infernape? Because so he can kill lots of people that don't expect to be overspeeded. Its great movepool covers a lot of threats of my team and he usually survives a lot because after he killed, escapes leaving the scene to azelf or dragonite. I think it's very hard to counter him.
Mixed Sweeper: Adamant Dragonite @ Choice Specs
EV: 140 Atk / 152 SAtk / 218 Spe
-Thunderbolt
-Outrage
-Earthquake
-Fire Blast
With its great statistics he can create serious problem to the foes that usually faint after an earthquake or outrage. Anyway, he works well until he meet an ice move/pokemon.
Please RMT and help me improve it;)

Leader: Jolly Ambipom @ Life Orb
Ability: Technician
EV: 6 HP / 252 Atk / 252 Spe
-Fake Out
-Return
-Payback (I'll substitute it with pursuit when i have the chance)
-Aerial Ace
Very useful lead/physical sweeper. Fake out and Return do a lot o damage since 1st turn and also Fake Out make the foe to flinch. Payback(Pursuit) is for gengar and all the pokes that don't take enough damage from the normal moves. Arial Ace is for the fighting one that think they switch in for free. Also the ability of Ambipom helps this.

Special Sweeper: Modest Azelf @ Expert Belt
EV: 6 HP / 252 SAtk / 252 Spe
-Nasty Plot
-Psychic
-Thunderbolt
-Grass Knot
My special sweeper. After just one nasty plot he can ohko a lot of people. He's also hard to take down with one shot ( he survived a thunderbolt of Zapdos and a SpecDragonite), so I think it's perfect to do lot of damage. I prefered thunderbolt over fire blast because dragonite and infernape have already fire moves and I need some electric moves to counter Gyrados or some annoying waters.

Physical Wall: Adamant Metagross @ Leftovers
EV: 58 HP / 252 Atk / 200 Def
-Meteor Mash
-Pursuit
-Eathquake
-Explosion
I think this is one of the biggest surprise in my team. With its incredible Defense Metagross can take a lot of physical damage and it's really hard to ohko him even with special attack (except the fire moves). When his Hp are low he explodes causing instantly death ( I killed even a cursed Swampert with full HP)

Special Wall:Calm Milotic @ Leftovers
EV: 124 HP / 252 Def / 16 SAtk / 116 SDef
-Surf
-Ice Beam
-Rest
-Sleep Talk
My special wall. It's nothing special but it works well against a lot of pokemon, even dragons that don't ohko him even with a thunderbolt ( but a roserade lifestorm does)

Mixed Sweeper/Revenge Killer: Naive Infernape @ Choice Scarf
EV: 252 Atk / 252 SAtk / 6 Spe
-Grass Knot
-Flare Blitz
-Hidden Power [Ice]
-Close Combat
My pride. Why a choice scarf on Infernape? Because so he can kill lots of people that don't expect to be overspeeded. Its great movepool covers a lot of threats of my team and he usually survives a lot because after he killed, escapes leaving the scene to azelf or dragonite. I think it's very hard to counter him.

Mixed Sweeper: Adamant Dragonite @ Choice Specs
EV: 140 Atk / 152 SAtk / 218 Spe
-Thunderbolt
-Outrage
-Earthquake
-Fire Blast
With its great statistics he can create serious problem to the foes that usually faint after an earthquake or outrage. Anyway, he works well until he meet an ice move/pokemon.
Please RMT and help me improve it;)