The Bio Push :

This push will work on almost every map except in 2v2 on twilight fortress. Start out with 10 depot -> and keep scvs pumping nonstop, that means dont rush to get rax right after depot, keep scvs pumping Till about 13 then throw down rax and gas.

Continue scvs pumping and throw down another depot at 16, 1 rine after barracks, stop scvs after barracks and immediatly get orbital relay + mule. keep scv pumping and get physics core on barracks for marauder. Soon after add 2nd barracks and then add reactor to it and pump nonstop rines with nonstop marauder. Then add ghost reactor (or w/e the building is called) and dont research cloak energy or worry about nuke just use ghost for emp, get a ghost and research stim, 2nd phsycics center on 3rd rax and pump nonostop mrauder / marine , when the stimpack is done u will have big force, possibly u can add 4th race for another reactor for marines, but this is super all in, id prefer to add a factory after attack if they dont die then starport for dropship or expand.

You use EMP on all they're units, with the 3 barracks you've been macroing you will most likely steam roll them if you have a good EMP.


Source : Terran vs protoss bio push