Powers of X #4 reveals several of Mister Sinister's secrets in a gossip-style newsletter, The Red Diamond.
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The Red Diamond seemingly hints at Miss Sinister's return.
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It suggests that Cyclops may be revived and retake his prime leadership role in the X-Men soon.
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Sinister also claims that he has something Maddie Pryor, Jean Grey's clone, left behind.
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Sinister teases conflict between an aggressive Namor and the X-Men's island nation.
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Sinister also revealed that he used Thunderbird's DNA to experiment on himself.
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Sinister also indicated that some classic X-Men love triangles would be returning.
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Sinister seemingly suggests that he still has some of Stryfe's Legacy Virus samples.
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Sinister also teases the possibility of Cyclops having another mysterious brother.
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Sinister mentions Apocalypse reviving his first four Horsemen from Marvel Comics #1000.
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Sinister also seemed to hint at Apocalypse and Moira MacTaggert's revived romance.
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Sinister also teased the idea of a new "Inferno," a reference to a major early Sinister crossover.
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Mister Sinister also indicated that he's been fully aware of Xavier's plans for some time.
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