This build allows you to produce Hydralisks by 5:30, effectively countering fast Reavers or a 7 Hatch Hydra build.
This build sets you up for a very strong economy and mid game transition. Also allows you to afford alot of sunkens for early defense.
High Risk High Reward build that allows you to put you in a good 2v3 situation
Safest and Fastest way to go Mutas