The fun didn’t stop there, though, as Strange then traveled to the Dark Dimension and put himself and Dormammu through a time loop until the entity agreed to leave Earth alone.
By the time Doctor Strange and Mordo tracked down Kaecilius and his followers to Hong Kong, that Sanctum had been destroyed, leaving nothing to stop the Dark Dimension from beginning to destroy Earth.
Fortunately, thanks to Strange using the Eye of Agamotto (a.k.a. the Time Stone), he was able to reverse the damage caused by Kaecillius, which included bringing Wong back to life.
Since this isn’t the last we’ve seen of the Eye in the MCU, one can only imagine what other kind of temporal weirdness we may be in for later down the line.