I've been on playing on pokemon showdown for a while, made a few teams, and for my first RMT I decided to use this team. I can win maybe 50% of the time, but I feel like it has more potential.
BTW this team is a Blue team, in case you can't tell, so if i need to swap a poke for another i'd prefer it'd be blue, if possible.
Here we go:
Metagross @Leftovers
Ability: Clear Body
Evs: 86 HP/252 Atk/172 Def
Adamant Nature (+Atk, -SpA)
-Hone claws
-Meteor mash
-Earthquake
-Zen Hedbutt
Metagross is a great physical sweeper, with good bulk too. I tried using the agiligross set, but I wanted to put a little more power into metagross' punches. Hone claws being his only way to boost attack, i decided to trade speed for a little more power and bulk. Standard set of moves really, nothing special. With such low speed im not sure this is the best sweeper, but still hits really hard.
Latios @Leftovers
Ability: Levitate
Evs: 6 HP/252 SpA/252 Spe
Timid Nature (+SpA, -Atk)
-HP fire
-Dragon pulse
-Thunder
-Calm mind
Latios gets good synergy with metagross (also blue!), so it's an obvious choice for this team. If i can get in a couple calm minds, latios just destroys. Thunder to nab starmie, politoad; standard rain team pokes. Other moves are pretty standard.
Swampert @Leftovers
Ability: Torrent
Evs: 252 HP/6 Atk/252 Def
Impish nature (+Def, -SpA)
-Waterfall
-Hammer arm
-Roar
-Rain dance
Swampert is here to help with sandstorm, rain dance to get rid of sandstorm, obviously, hammer arm to KO tyranitar, roar to scout. Waterfall is for STAB...
Tentacruel @Leftovers
Ability: Liquid Ooze
Evs: 252 HP/200 Def/58 Spe
Bold Nature (+Def, -Atk)
-Toxic spikes
-Toxic
-Rapid spin
-Scald
Tentacruel absorbs toxic spikes; spins. If i can get stealth rock and toxic spikes up, it makes if much easier for my sweepers to, well, sweep. I wouldn't call this a hazards-week team, but passive damage does add up, so a rapid spinnner is a must. Scald for STAB and burning.
Azelf @Focus sash
Ability: Levitate
Evs: 6 HP/252 SpA/252 Spe
Timid Nature (+Spe, -Atk)
-Stealth rock
-Flamethrower
-Energy ball
-HP ice
My usual lead. I like to think of this as an 'anti-lead lead'. Moveset helps to take out a good chunk of HP from common leads, such as politoad, forretress, and gliscor. After doing a little damge, i get my rocks up, and usually just let this guy get KO'd.
Lucario @Focus sash
Ability: Steadfast
Evs: 6 HP/252 Atk/252 Spe
Adamant Nature (+Atk, -Spe)
-Extremespeed
-Close combat
-Bullet punch
-Swords dance
Main physical sweeper of this team. I decided to go with an adamant adamant nature, since most of his moves are priority. Focus sash almost guarantees a swords dance, so Lucario can begin a sweep on hazard-weakened pokemon.
be sure to rate, I am open to suggestions.
BTW this team is a Blue team, in case you can't tell, so if i need to swap a poke for another i'd prefer it'd be blue, if possible.
Here we go:

Metagross @Leftovers
Ability: Clear Body
Evs: 86 HP/252 Atk/172 Def
Adamant Nature (+Atk, -SpA)
-Hone claws
-Meteor mash
-Earthquake
-Zen Hedbutt
Metagross is a great physical sweeper, with good bulk too. I tried using the agiligross set, but I wanted to put a little more power into metagross' punches. Hone claws being his only way to boost attack, i decided to trade speed for a little more power and bulk. Standard set of moves really, nothing special. With such low speed im not sure this is the best sweeper, but still hits really hard.

Latios @Leftovers
Ability: Levitate
Evs: 6 HP/252 SpA/252 Spe
Timid Nature (+SpA, -Atk)
-HP fire
-Dragon pulse
-Thunder
-Calm mind
Latios gets good synergy with metagross (also blue!), so it's an obvious choice for this team. If i can get in a couple calm minds, latios just destroys. Thunder to nab starmie, politoad; standard rain team pokes. Other moves are pretty standard.

Swampert @Leftovers
Ability: Torrent
Evs: 252 HP/6 Atk/252 Def
Impish nature (+Def, -SpA)
-Waterfall
-Hammer arm
-Roar
-Rain dance
Swampert is here to help with sandstorm, rain dance to get rid of sandstorm, obviously, hammer arm to KO tyranitar, roar to scout. Waterfall is for STAB...

Tentacruel @Leftovers
Ability: Liquid Ooze
Evs: 252 HP/200 Def/58 Spe
Bold Nature (+Def, -Atk)
-Toxic spikes
-Toxic
-Rapid spin
-Scald
Tentacruel absorbs toxic spikes; spins. If i can get stealth rock and toxic spikes up, it makes if much easier for my sweepers to, well, sweep. I wouldn't call this a hazards-week team, but passive damage does add up, so a rapid spinnner is a must. Scald for STAB and burning.

Azelf @Focus sash
Ability: Levitate
Evs: 6 HP/252 SpA/252 Spe
Timid Nature (+Spe, -Atk)
-Stealth rock
-Flamethrower
-Energy ball
-HP ice
My usual lead. I like to think of this as an 'anti-lead lead'. Moveset helps to take out a good chunk of HP from common leads, such as politoad, forretress, and gliscor. After doing a little damge, i get my rocks up, and usually just let this guy get KO'd.

Lucario @Focus sash
Ability: Steadfast
Evs: 6 HP/252 Atk/252 Spe
Adamant Nature (+Atk, -Spe)
-Extremespeed
-Close combat
-Bullet punch
-Swords dance
Main physical sweeper of this team. I decided to go with an adamant adamant nature, since most of his moves are priority. Focus sash almost guarantees a swords dance, so Lucario can begin a sweep on hazard-weakened pokemon.
be sure to rate, I am open to suggestions.