Alright, I've been testing this team out, and it's worked pretty well so far, but I want to hear your suggestions.
Here's the team:
Mamoswine @ Leftovers
Ability: Thick Fat
EVs: 4 HP, 252 Atk, 252 Spe
Nature: Jolly
Stealth Rock
Icicle Crash
Ice Shard
Earthquake
Here's the team:
Mamoswine @ Leftovers
Ability: Thick Fat
EVs: 4 HP, 252 Atk, 252 Spe
Nature: Jolly
Stealth Rock
Icicle Crash
Ice Shard
Earthquake
This Mamoswine can take out almost any lead, than safely set up stealth rock. Problems it runs into: Max Speed Jirachi, Ferrothorn (If icicle crash doesn't make it flinch), and Scizor.
Zoroark @Focus Sash
Ability: Illusion
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Modest
Nasty Plot
Night Daze
Flamethrower
Focus Blast
Metagross @Occa Berry
Ability: Clear Body
EVs: 128 HP, 252 Atk, 128 SpDef
Nature: Adamant
Meteor Mash
Bullet Punch
Earthquake
Zen Headbutt
Zoroark @Focus Sash
Ability: Illusion
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Modest
Nasty Plot
Night Daze
Flamethrower
Focus Blast
This is a fairly standard Zoroark, and it is modest because it'll still outspeed most other pokemon, and it'll packs a little more of a punch than timid does.
Metagross @Occa Berry
Ability: Clear Body
EVs: 128 HP, 252 Atk, 128 SpDef
Nature: Adamant
Meteor Mash
Bullet Punch
Earthquake
Zen Headbutt
It has no speed EV because with only 70 speed, Metagross would never be outspeeding much, and it also lets it wall Gyro Ball better. I put no EVs in Defense because with base 130 defense, it's gonna be able to take a hit or two, so i put the evs into Special Defense. Bullet Punch is to beat focus sash users or weavile.
Kingdra @Lum Berry
Ability: Swift Swim
EVs: 4 HP, 252 Atk, 252 Spe
Nature: Jolly
Dragon Dance
Outrage
Waterfall
Yawn
Kingdra @Lum Berry
Ability: Swift Swim
EVs: 4 HP, 252 Atk, 252 Spe
Nature: Jolly
Dragon Dance
Outrage
Waterfall
Yawn
Kingdra has swift swim instead of sniper because with the introduction of drizzle politoed, many people have rain teams, and this is a great counter to rain. I couldn't decide on the last move, so I used Yawn to act as a pseudo haze, and force a switch and a free dragon dance.
Accelgor @Leftovers
Ability: Hydration
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Timid
Toxic
Bug Buzz
Substitute
Recover
Accelgor @Leftovers
Ability: Hydration
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Timid
Toxic
Bug Buzz
Substitute
Recover
Accelgor, a very rarely used pokemon, works great and can counter pretty much any non steel/poison pokemon. This set is basically to stall, and Hydration will help with that if drizzle is in effect. The EVs also allow it to OHKO any Reuniclus that doesn't have max SpDef. The HP EVs also allow it to use substitute well.
Thundurus @ Life Orb
Ability: Prankster
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Modest
Thunder Wave
Thunderbolt
Psychic
Focus Blast
Thundurus @ Life Orb
Ability: Prankster
EVs: 4 HP, 252 SpAtk, 252 Spe
Nature: Modest
Thunder Wave
Thunderbolt
Psychic
Focus Blast
The only thing that really sets this apart from other Thundurus' is the Psychic. With a modest nature, and a life orb, Psychic can easily OHKO Conkledurr, Machamp, and most other fighting/poison pokemon. It isn't Timid because with thunder wave, it'll be outspeeding most everything. The only real problems it has are with Excadrill in sandstorm.
I am completely open to suggestions, so tell me whatever you think i should change about the team.