Another interesting show and tell.
I understand this would make good hit and runners but they are healing too quickly.
The new Mutalisk Regen is interesting but you gotta admit waltzing into the psionic storm and parasitic bomb etc unharmed makes them imba.
(OK maybe if you are under clusters of enemies maybe that would be more difficult).
I see that you want to make them perfect hit and run units but yeah.
Btw, seeimg Mutals ripping apart HT, SC and vipers unharmed for a change brought a smile on my face.
Also, you can send in the zerglings to make them waste their special abilities, then send in the cavalry.
They cause 250 area damage for 75 mana, what a deal right?