For a long time since Wings of Liberty, 2x Medivacs was a standard check point in all TvP builds. Be it 12/12 Reaper expand, 14CC or 2 barracks, the builds converged back to a 2x Medivac move out ...

SC2 101: Shew pro build order for PvP Protoss master Shew details a personal build that he likes to use when playing PvP. This build details how to enable units to attack up 2 different enemy ramps ...