Card Rulings:Hidden Spellbook

• If you have less than two Spell Cards in your Graveyard, you cannot activate "Hidden Book of Spell".

• When you activate "Hidden Book of Spell" and your opponent chains "Disappear" or "Graverobber", and 1 of the targeted Spell Cards is removed from the Graveyard, the remaining Spell Card goes back to the Deck and the Deck is shuffled.