The Book of Moon (YS18-EN027) is a Quick-Play Spell Card from the 2018 Starter Deck: Codebreaker, offering versatile tactical utility for Yu-Gi-Oh! duelists.
2018 • Yu-Gi-Oh! • Starter Deck: Codebreaker
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Raw / Ungraded
PriceCharting Price Guide · Guide Estimate evidence · captured Oct 19, 2026
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Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.The Book of Moon (YS18-EN027) serves as a fundamental tool within the Yu-Gi-Oh! Trading Card Game, originating from the 2018 Starter Deck: Codebreaker. Classified as a Quick-Play Spell Card, this card belongs to the Book archetype, a collection of effects designed to manipulate monster positions on the field. Its inclusion in the Starter Deck: Codebreaker ensures that new and veteran players alike have access to this reliable interaction during the duel. As a Quick-Play Spell, Book of Moon allows players to activate its effect during their own turn or their opponent’s turn, providing flexibility in timing that is crucial for adapting to changing board states. The card’s primary function is to flip one face-up monster on the field to its Defense Position, a mechanic that can disrupt an opponent’s attack strategy or protect a vulnerable monster from battle. This simple yet effective effect makes it a staple in many decks that rely on controlling the battlefield or setting up combos that require specific monster orientations. Collectors and players value this card not only for its gameplay utility but also for its accessibility. Being a Common rarity, it is widely available in the Starter Deck: Codebreaker, making it an affordable addition to any collection. The card’s straightforward design and consistent performance have cemented its place as a go-to option for those looking to round out their spell cards. Whether you are building a competitive deck or simply expanding your collection of Yu-Gi-Oh! cards, the Book of Moon represents a solid investment in strategic depth. For those interested in completing the Starter Deck: Codebreaker series, this card is an integral part of the set’s identity. Its presence in the 2018 release highlights the game’s focus on accessible mechanics that empower players to engage in dynamic duels. By including Book of Moon, Yu-Gi-Oh! continues to provide tools that encourage creativity and tactical decision-making, ensuring that every duel offers new possibilities for players to explore.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Book of Moon
Game
Yu-Gi-Oh!
Rarity, print treatment, and game-specific stats for this card.
Common
Card Stock
English
Quick-Play
Book of
Abilities, attacks, oracle text, and flavor text printed on the card.
Target 1 face-up monster on the field; change that target to face-down Defense Position.
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