The preview pages for X-Men #1 by JHickman and Leinil Yu.
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Well, at least we know she will be there for this and the next issue.
True, but I remember reading something that said that Phoenix Jean (the PF believing itself to be Jean), was very susceptible to psionic attack. Hence the control by Mesmero and corruption by illusion from Mastermind. Also why Emma and Charles could enter her mind at all.