Book of Moon

Book of Moon was first released in the 2002 set Pharaoh's Servant, serving as a tactical staple during the early years of the Yu-Gi-Oh! Trading Card Game. Its design centers on a versatile effect that allows players to flip any face-up monster into face-down defense position, a mechanic that provides both defensive utility against attacks and offensive disruption against monster effects that require specific positioning. The card was illustrated by Konami's internal design team to reflect a mystical, celestial aesthetic that fits the game's broader fantasy theme.

The Retro Pack 2 iteration, released in 2009, was created to provide players with access to older, tournament-essential cards that had become difficult to acquire. As a common rarity print, the RP02-EN070 version was intended to be an accessible reprint rather than a collector's piece. Throughout its history, the card has remained a hallmark of strategic play, widely regarded by the community for its high skill ceiling and consistent relevance across multiple formats of the game.