Chosen answer:The post credits scene from "X-Men: The Last Stand" showed that Xavier transferred his consciousness into another person (who was revealed to be his twin brother by the writers) and the final shot in the same film showed Magneto was gaining his powers back, indicating that the cure wasn't permanent.
Chosen answer: The post credits scene from "X-Men: The Last Stand" showed that Xavier transferred his consciousness into another person (who was revealed to be his twin brother by the writers) and the final shot in the same film showed Magneto was gaining his powers back, indicating that the cure wasn't permanent.
Phaneron ★