i think 1 unit muta need 100 gas? 1 base don think enough gas to fast build them.
I tried to spam muta but not sure why always spam not as fast/pro as other player..., some more they are so fragile....,
they are good only when in large group
Zerg i always roach until 100+ unit then mixed with hydra, keep 40% 60%, maybe 10% for ultralisk late game.

but 8-9 muta Vs Marines = lost, harass yeah, does this tactic work on harass AI?

Ya i saw muta good in harass, but not to against any anti-air unit or team battle, to me they are bloody expensive with low hp.....
If marines try to base trading then suppose marines should win

I played in league but never see people using banneling, popular way is raper,void,muta, or other mass early rush, lose to zergling early rush also, what a shame

I played 1v1 league with 6pool and get silver lol
But if they know how to defend then i just surrender since economy is too huge different (also lazy to recover my economy....)and seems zerg vs terran 6 pool ling rush high chance to win.

Ya, same tactic, but i'm pacnic if they can defend my ling (protoss cannon, terran bunker), then my ling just can stand outside wait lose....lol, doono how to transition already, drone count too low

I just completed 5-zealot rush achievement last night, build order (initially i thought have to use warp gate to warp zealot only can get achievement, misunderstanding on the requirement)
1) build 2 more probe (until food 8/10)
2) build pylon, build gateway and another gateway when got the mineral
3) once gateway is done, spam zealot (remember to chronoboost!!!!), you will get 5 zealot with food 18/18