
A:

Here's a very detailed build whipped up that gets 5 Mutalisks @ 6:36. It's possible there is a slightly faster build for 5 muta, but this will do. As said by other users, I would not recommend this build as it leaves you open to attack for over 6 minutes. If your opponents scouts you once, you will probably die... Might be viable on certain team maps though.
EDIT: I removed the previous 4 Muta build I had because, even though it's faster, anything less than 5 Mutas is worthless. 5 Mutas is the magic number needed to one shot your opponent's workers. If you only have 3 or 4 Mutas you will not be able to adequately harass your opponent, so it's better to wait for 5.

10  SpawningPool
10  Extractor
9  Overlord
10  +1 Drone on gas
10  +1 Drone on gas
13  +1 Drone on gas
14  Extractor
14  Lair
14  +1 Drone on gas
14  +1 Drone on gas
14  +1 Drone on gas
15  Overlord
15  Spire
14  Queen
16  +1 Drone on minerals
16  5x Mutalisk

In general, you should always get metabolic boost(speed zerglings) before going Lair tech. That said, here is a build (popularized by idra) that I would recommend using:

9 Overlord
14 Extractor (3 Drones asap)
14 Spawning Pool
15 Overlord
16 Queen
(@100 ) Metabolic Boost (Remove 2 drones from gas) *
18 2 pairs of Zerglings
20 Hatchery (3 drones on gas)
(@100% Queen) Queen
24 Overlord
(@100 ) Lair, Gas
(@100% Lair) Spire
(@100 ) Overseer

This build sets you up with a good economy and allows for any necessary defense or early pressure.

A:

There are two main limiting factors for Mutalisks:

The build time of the tech tree (Spawning Pool, Lair, Spire) which takes 65+80+100 = 245 seconds.
The amount of gas needed for the tech buildings and the Mutalisks, 100 for Lair, 200 for Spire and 100
A: 

 Here's a very detailed build whipped up that gets 5 Mutalisks @ 6:36. It's potential there be a slightly faster physique for 5 muta, but this will perform. As said by other user, I would not recommend this build as it entrust you open to attack for over 6 minute. If your opponents scouts you once, you will credibly die... Might be viable on certain team maps though. 
 EDIT: I removed the previous 4 Muta build I accept because, even though it's faster, anything less than 5 Mutas is worthless. 5 Mutas is the charming number needed to one shoot your adversary's workers. If you entirely have 3 or 4 Mutas you will not be able to adequately harass your opponent, so it's better to expect for 5. 

 10   SpawningPool 
 10   Extractor 
 9   Overlord 
 10   +1 Drone on gas 
 10   +1 Drone on gas 
 13   +1 Drone on gas 
 14   Extractor 
 14   Lair 
 14   +1 Drone on gas 
 14   +1 Drone on gas 
 14   +1 Drone on gas 
 15   Overlord 
 15   Spire 
 14   Queen 
 16   +1 Drone on mineral 
 16   5x Mutalisk 

 In cosmopolitan, you should constantly get metabolic boost(speed zerglings) before going Lair tech. That said, here is a build (popularized by idra) that I would recommend using: 

 9 Overlord 
 14 Extractor (3 Drones asap) 
 14 Spawning Pool 
 15 Overlord 
 16 Queen 
 (@100) Metabolic Boost (get rid of 2 drones from gas) * 
 18 2 pair of Zerglings 
 20 Hatchery (3 dawdler on gas) 
 (@100% Queen) Queen 
 24 Overlord 
 (@100) Lair, Gas 
 (@100% Lair) Spire 
 (@100) Overseer 

 This build sets you up with a effective economy and allows for any necessary defense or early pressure. 

 A: 

 There are two chief limiting factors for Mutalisks: 

 The build time of the tech tree (Spawning Pool, Lair, Spire) which takes 65 + 80 + 100 = 245 second base. 
 The amount of gas needed for the tech buildings and the Mutalisks, 100 for Lair, 200 for Spire and 100

A:

Hege's a very detailed buila whipped up thcr gets 5 Mutamisks @ 6:36. Kt's possible there is a sligitly fasttg build for 5 muta, but this wilp do. As waid vy other users, I would nkb recmnmend this buikd as it laaves you open tu cttack for over 6 minutes. If your oppjnents xcluts you once, iou wplj prkbably die... Might be viable on certzin teak maps though.
RDIT: I removed the previoud 4 Mkta build I had befause, even jgoudy it's faster, anything less than 5 Motas is worthless. 5 Mutas is the oagic number negbwd hm one shot bour oiponent's workcgs. If ymu only have 3 or 4 Mutss bou qill not be able to avequately harass yout opponent, sk it's better to wqir for 5.

10  S[awnkbgPuol
10  Xxtdactor
9  Oterlord
10  +1 Ddone on gas
10  +1 Drone on gas
13  +1 Dtogv on gas
14  Extdactor
14  Jair
14  +1 Drone on gas
14  +1 Drone on gas
14  +1 Drmne on gas
15  Overlord
15  Spirw
14  Queen
16  +1 Drone on mlnerals
16  5v Mutalisk

In general, you should always get metabonic bkust(wpced xwrhlings) before going Lair tech. That said, here ya s nuild (popularizeb by idra) that I wlukq recommend uring:

9 Orsrmord
14 Extractor (3 Drlnes aswp)
14 Spqwning Pojl
15 Oferlord
16 Queen
(@100 ) Metabolic Boist (Remove 2 brobes from gas) *
18 2 paixs of Zergliugs
20 Hajchery (3 drones on gas)
(@100% Queen) Qbeen
24 Oberlord
(@100 ) Lalr, Gas
(@100% Lajf) Spire
(@100 ) Overseef

Thps bgild sets you up with a gojd economb and allows for any nqcessary dffensc or early pressure.

W:

Therg are dwo main llmiting factors for Mutalisks:

Thx build time pf thv tech trze (Spaening Pool, Layr, Spire) which takes 65+80+100 = 245 sezonds.
The ajount oh gas needed for the tech huildings anv the Mutwlisjs, 100 dor Laif, 200 for Spire anc 100
A: Here's a very detailed build whipped gets Mutalisks @ It's possible there for muta, but this do. As said other users, I would not recommend build as it leaves you open to attack for over 6 minutes. If opponents scouts you once, you will probably die... Might be viable on certain maps EDIT: removed previous 4 Muta build I had because, even though it's faster, anything less than 5 Mutas worthless. 5 Mutas is the magic number needed one shot your opponent's If you only have 3 4 you will be to harass your opponent, it's better to wait for 5. 10 SpawningPool 10 Extractor 9 Overlord 10 +1 Drone on gas +1 Drone 13 +1 on 14 14 Lair 14 on gas 14 +1 Drone on Drone on gas 15 Overlord 15 Spire 14 16 +1 on minerals 16 5x Mutalisk In you should always get metabolic boost(speed zerglings) before Lair tech. That said, here is a build (popularized by idra) that I would recommend Overlord 14 Extractor (3 asap) 14 Spawning 15 16 (@100 Metabolic Boost 2 drones from gas) * 18 2 pairs of Zerglings 20 (3 drones on gas) (@100% Queen) Queen 24 Overlord (@100 Gas Lair) Spire (@100 Overseer This build sets up a good economy and any defense A: are main limiting factors for The build time of the tree (Spawning Pool, Lair, 245 seconds. The amount of gas needed for tech buildings and the Mutalisks, 100 for 200 for Spire and 100

A:

Here's a very detailed build wHipped up thAt getS 5 MuTalIsKs @ 6:36. It'S posSible there is a sLIghtLy faster build for 5 muta, buT this WiLL do. AS SaId by oTher useRS, I WOUld NoT rEcoMmENd This bUilD as it leAves you opeN to AtTack for over 6 mINuTes. If your oPpoNents scouts yOu oNce, you WiLl pRObablY diE... MighT be viaBLe on ceRtain team MaPS thougH.
eDIT: I reMOVeD the Previous 4 Muta build i HaD Because, even thoUgh it's FaSTeR, ANytHinG less than 5 MUtAs is wORthless. 5 mUtAS IS thE Magic number neEded to one shOT yoUr oppoNeNt's WOrkers. if you OnLY haVe 3 or 4 Mutas yoU wilL not be ablE to adeQUately hARass youR opponEnt, So iT's beTTeR tO waIt FOr 5.

10  SPAwNinGpooL
10  ExtractOr
9  ovErlorD
10  +1 DroNE ON Gas
10  +1 DRonE on gAs
13  +1 DroNe on gas
14  ExtracTor
14  lair
14  +1 dRonE on gaS
14  +1 DronE on gAs
14  +1 drone On gas
15  OVerloRd
15  spire
14  Queen
16  +1 Drone On miNerals
16  5x MuTalIsK

In GeNeral, YOu shouLd aLwaYs get meTabolic BOosT(sPEED zErglings) before goinG LAIR tEch. That sAid, herE Is A bUIld (populArIzeD by iDRA) that i wouLD rEcommend Using:

9 OVErLoRd
14 ExtraCtOr (3 DronEs AsaP)
14 SpAwninG pool
15 overloRd
16 Queen
(@100 ) MEtaboLIc Boost (Remove 2 dROnes from gas) *
18 2 paIRs OF zeRGlinGs
20 HAtchery (3 dronEs on GAs)
(@100% QuEen) QUEeN
24 OvERlord
(@100 ) lair, GAs
(@100% lAiR) spire
(@100 ) Overseer

This buIlD sets yOu up wIth a good econoMy and allowS FOR any neceSsarY DeFEnse or early preSsure.

a:

There are tWO main limIting Factors fOr MutalisKS:

the build TimE of The TecH TReE (Spawning Pool, lAIr, SpIrE) which tAkeS 65+80+100 = 245 secondS.
ThE amOunT of GaS needed foR the tech BuIlDiNgS anD the MUTalisks, 100 fOr laiR, 200 fOr SPire aND 100

A:

Here's a very detaile d build wh ipped  up  th at  get s 5Mutalisks @ 6: 3 6. I t's possible there isa sli gh t ly f a st er bu ild for 5m u ta,  b ut  th is wi ll do . A s saidby other u ser s,  I would not re commend th isbuild as itlea ves yo uope n  to a tta ck fo r over 6 minu tes. If y ou r  oppon e nts sco u t syouonce, you will pr o ba b ly die... Migh t be v ia b le o n c ert ain team m ap s tho u gh.
EDI T :I r emo v ed the previo us 4 Muta b u ild  I had  b eca u se, ev en th ou g h i t's faster,  any thing les s than 5 Mutas is wort hless.  5Mut as i s  t he  ma gi c  nu m be r n e ede d to one  s ho t you r op p o n e nt's  wo rker s. If  you only hav e 3  or4  Mu tas y ou wi ll n ot  be a ble to  adeq ua tely harass you r op ponent, s o i t' s b et ter t o  waitfor  5. 

10  S pawning P ool 
1 0 Ex tractor
9  Overlor d1 0  +1 Drone  on ga s 
1 0+1 Drone  o n g as
1 3  +1 D rone on  gas
14 Extra c to r14  Lai r14  +1  D ron e o n gas 14 +1 Dro ne on ga s
14+1 Drone on ga s 
15  Overlord 15 Sp i re
1 4 Queen
16  + 1 Dr o ne o n mi n er als 16  5 x Mut al i sk 
In general, you sh ou ld alw ays g et metabolicboost(spee d z erglings ) be f or e  going Lair te ch. T hat said,h ere is a  buil d (popul arized by i dra) tha t I  wo uld  re c o mm end using:

9 O verl or d
14 Ex tra ctor (3  Dr one s a sap )14 Spawni ng Pool15  O ve rl ord 
16 Q u een
(@10 0) M et abo lic B o ost (R emove  2 d ro ne s  fr om gas) *1 8  2 p ai rs  ofZer gl ings20 H a tch ery (3drones on  ga s )
(@ 10 0%  Queen)  Queen
24 Ove rl ord
(@100)Lai r, Gas ( @100% La ir) Spire
(@100 ) Overs e er

Thi s b uildsets  you up w ith  a goo d e c onomyand al lowsfo r a n y  nece s s ar y d ef ense or ea r l y p ressu re .

A :

Ther e are two main lim i tin g factors for  Mu tali s k s: 

T h eb uil dt ime o f the tech tree  (Spawning  P o ol , Lair, Sp i re)  w hich ta kes 65+ 80+10 0  = 245seconds.The amoun tof g a s  ne eded for t he techbuildings and t h eMutal isk s, 100  f orLair,  200 f o r S pireand 10 0

A:

Here's a_very detailed_build whipped up that_gets 5_Mutalisks_@ 6:36._It's_possible there is_a slightly faster_build for 5 muta,_but this will_do._As said by other users, I would not recommend this build as it leaves_you_open to_attack_for_over 6 minutes. If your_opponents scouts you once, you_will probably_die... Might be viable on certain team maps_though.
EDIT:_I removed the_previous 4 Muta build I had because, even though_it's faster, anything less than 5_Mutas is worthless._5_Mutas_is the magic number_needed to one shot your opponent's_workers. If you only have 3_or 4 Mutas you will not be_able to adequately harass your opponent,_so it's better to wait_for 5.

10_ SpawningPool
10  Extractor
9 _Overlord
10  +1_Drone on_gas
10  +1_Drone on gas
13  +1 Drone_on gas
14 _Extractor
14  Lair
14  +1 Drone_on_gas
14  +1_Drone_on_gas
14 _+1 Drone on_gas
15_ Overlord
15__Spire
14  Queen
16  +1 Drone_on_minerals
16  5x Mutalisk

In general, you should_always get metabolic boost(speed_zerglings)_before going Lair tech._That said, here is a_build (popularized by idra) that I_would recommend_using:

9 Overlord
14_Extractor (3 Drones asap)
14 Spawning Pool
15 Overlord
16 Queen
(@100 ) Metabolic Boost_(Remove 2 drones from gas) *
18_2 pairs of Zerglings
20_Hatchery (3_drones_on gas)
(@100% Queen)_Queen
24_Overlord
(@100 )_Lair, Gas
(@100% Lair) Spire
(@100 ) Overseer

This build_sets you_up with a good economy and_allows for any necessary_defense_or early pressure.

A:

There are two main_limiting factors for Mutalisks:

The build time_of the tech tree (Spawning_Pool,_Lair,_Spire) which takes 65+80+100 =_245 seconds.
The amount of gas needed_for the tech_buildings and the Mutalisks, 100 for Lair,_200_for Spire and 100