what appeared to be her old body, which was in reality the alien polymorph "Stuff." Cassandra's essence entered the body and was locked into a self-repeating program in the synthetic brain. Hellfire Cassandra seemed to have returned in her original form in the "Danger" story arc of Astonishing X-Men, alongside Sebastian Shaw of the Hellfire Club. However, it is revealed that she is merely an illusion created by Emma who is acting out post-hypnotic suggestions implanted during Cassandra Nova's previous appearance. This infiltration occurred when Emma tricked Cassandra into entering what appeared to be her original body: Cassandra managed to plant a seed of her consciousness into Emma's brain. She then played up on Emma's survivor guilt over not perishing during the Genosha massacre and also her general guilt over her past life as the villainous White Queen in the Hellfire Club. Nova implanted suggestions that exploited Frost's guilt at surviving the destruction of Genosha in New X-Men #115, and Emma convinced herself that her survival was due to Cassandra Nova catalyzing Frost's secondary mutation. In exchange, Emma was to assist Nova as part of a scheme to infiltrate the X-Men as a sleeper agent with Nova having erased the memory of their encounter at the time. Cassandra's influence resulted in Emma creating manifestations of Cassandra in her human form, Sebastian Shaw, Emma's younger self as the White Queen (calling herself "Perfection"), and Negasonic Teenage Warhead, a former student of Emma's who was killed in Genosha. Emma and these manifestations then proceeded to attack the X-Men; Beast was reduced to a feral animal, Wolverine regressed to his past James Howlett identity as a timid child, Kitty Pryde lost control of her phasing ability, and Cyclops lost the use of his powers and was rendered catatonic. Meanwhile, Emma/Cassandra subjected Kitty to a cruel dystopic vision that tricked her into using her phasing powers to open the containment chamber where Cassandra, trapped in Stuff's form, had been imprisoned. Cassandra's plans were foiled by a revived Cyclops, and other students at the Xavier Institute (including Blindfold and Hisako Ichiki). Cyclops revealed that while "Cassandra" had influenced Emma to recruit Kitty to free her from the container, Emma had subconsciously recruited Kitty to the team to kill her in the hopes that this would thwart Cassandra's plans. Cassandra then attempted to have Emma transfer her mind into Hisako. While Cassandra was attempting to manipulate