You can reveal 1 Ritual Spell in your hand; Special Summon both this card from your hand and 1 Impcantation monster from your Deck, except Impcantation Bookstone . If this card is Special Summoned from the Deck: You can target 1 Ritual Spell in your GY; add it to your hand. You can only use 1 Impcantation Bookstone effect per turn, and only once that turn. You cannot Special Summon monsters from the Extra Deck.