Make spire.
Make bunch of mutas.
Force Fleet Beacon+Range Upgrade
Tech Switch to roach
This has been one of the hardest things to deal with as protoss when going stargate after seeing a spire, we have no way to know if its going to be 9 muta harass or mass mass muta, and over-spending on phoenix & an air upgrade can cause a roach switch to put you horrrrrrribly behind.
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