Among the numerous creations of Sinestro is the Book of Parallax.
Within the pages of the Book of Parallax lies all the knowledge of the Sinestro Corps and everything every Sinestro Corpsman has ever done or will do. A power ring is needed to translate the Book's text into words familiar to the ring wielder.
Before a candidate of the corps enters a fear lodge, their power rings are drained by the Book of Parallax.
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