“The Phoenix Saga – Part 1: Sacrifice”
Though Jean’s dizzy spells would eventually become associated with her manifesting the Phoenix Force in “The Phoenix Saga – Part 1: Sacrifice,” her first knockout comes by way of a strange gas that incapacitates the entire team. Not only is she one of the last people to succumb to the gas, she’s also one of the few people who has the sense to try to escape in a way that doesn’t involve a dangerous use of their powers that could have easily backfired and killed them all. However, later in the episode, she does properly lose consciousness after knocking out an entire crew of astronauts. Once she takes it upon herself to save the day by piloting the spacecraft as its burns up in Earth’s atmosphere, the episode closes out with her shrieking in pain as one of the first signs of You Know What showing up and giving Ms. Grey a whole new set of reasons to take a break.
