The Yu-Gi-Oh! Book of Eclipse is a spell card from the Rarity Collection 2, featuring the unique card number RA02-EN054. This powerful spell card can be used to put all face-up monsters on the field into face-down defense position. This can be a game-changing move, disrupting your opponent's strategy and leaving their monsters vulnerable. The beautiful artwork and high rarity of this card make it a coveted addition to any Yu-Gi-Oh! collection. Whether you're a seasoned duelist or a beginner, the Book of Eclipse is a must-have for any fan of the game.