Rate my doubles uu team.

Question

So.. yeah. Exactly what it says in the title. Here's my team:

Mienshao (M) @ Sitrus Berry
Ability: Regenerator
EVs: 50 HP / 100 Def / 4 SpA / 100 SpD / 252 Spe
Timid Nature
IVs: 1 Atk
- Aura Sphere
- Hidden Power [Dark]
- Baton Pass
- Work Up

Forretress (F) @ Occa Berry
Ability: Sturdy
EVs: 204 HP / 28 Atk / 252 Def / 24 SpD
Impish Nature
- Toxic Spikes
- Stealth Rock
- Explosion
- Rapid Spin

Chandelure (M) @ Rocky Helmet
Ability: Infiltrator
Shiny: Yes
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
IVs: 0 Atk
- Heat Wave
- Hex
- Rest
- Energy Ball

Shaymin @ Leftovers
Ability: Natural Cure
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Leech Seed
- Psychic
- Aromatherapy
- Synthesis

Metagross-Mega @ Metagrossite
Ability: Clear Body
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Brick Break
- Meteor Mash
- Rest
- Thunder Punch

Muk (F) @ Black Sludge
Ability: Poison Touch
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Venoshock
- Attract
- Rest
- Haze

Any suggestions? Keep in mind that this is for UnderUsed double battles.

Comments

PS: in case it's not as obvious as I thought, here's my strategy:
start with Mienshao and Forretress.  Mienshao either attacks any opponents that might cause trouble or uses work up while forretress sets entry hazards (almost always toxic spikes) for one or two turns.  Then switch mienshao with chandelure (either regular switch or baton pass, depending on which better fits the situation) as forretress uses explosion.  From there, I mainly improvise. Other pokemons' roles:
    Chandelure is immune to foretress' explosion and has an amazing sp.atk stat: special sweeper
    Shaymin: Psychic as a counter for poison types who wouldn't be affected by toxic spikes, as well as aromatherapy to cure sleep inflicted by rest: medic/staller
    Metagross: Thunderpunch as a counter for birds who aren't affected by TxSpx: physical sweeper
    Muk: venoshock does double on poisoned pokemon, which works very well in tandem with txSpx: staller/hazer

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lol, looking back at my first competitive team and realizing just how little I knew is funny :P (I mean seriously, what ARE these EV spreads?)