Card Rules: Rulings powered by The Netrep API. You cannot activate 'Book of Life' if there is no monster in the Graveyard to remove from play. You cannot activate 'Book of Life' if your opponent controls 'Kycoo the Ghost Destroyer'. If you activate 'Book of Life' and your opponent chains 'Call of the Haunted' to Special Summon 'Kycoo the Ghost Destroyer' , you still get to Special Summon 1 Zombie with Book of Life's effect (but do not remove 1 monster from your opponent's Graveyard). [Re: Necrovalley] If 'Necrovalley' is active neither player may activate 'Book of Life'. Passcode: 2204140 Set: Structure Deck Card Number: SD2-EN021 Rarity: Common Attribute: Spell Card Text: Special Summon 1 Zombie-Type monster from your Graveyard to the field and remove from play 1 monster in your opponent's Graveyard. Card Type: Normal Spell Name: Book of Life Edition: 1st