depot
gas
rax
orbital
reaper
factory
2nd gas ( when finished you take 1 off of your first gas and put it on ur 2nd, whcih leaves 2 on each gas )
reactor on rax when reaper done
starport
armory
4 hellbat drop
build cc as your drop moves out, while ur harassing with drop start adding rax, get tech lab on rax and reactor on starport. Once your rax are done and ur safe with a few units drop double *** and cc, you just mass hellbats and mines outta ur reactored factory and mass rauder/rine/medivac with semi-constant hellbat drops
I haven't lost a TvZ yet doing this and I'm like 60 games into HoTS high masters/low gm MMR atm