If you have 5 or more "Spellbook" Spell Cards in your Graveyard: Excavate the top 2 cards of your Deck, add any excavated "Spellbook" Spell Cards to your hand, also shuffle the other cards into the Deck. You can only activate 1 "Spellbook Library of the Heliosphere" per turn. You cannot activate any Spell Cards the turn you activate this card, except "Spellbook" Spell Cards.
Can add up to 2 Spellbook cards from the top of your deck to hand.
Can only be activated once you have 5 or more Spellbooks in the graveyard.
The top cards of your deck must be Spellbook cards for this card to be effective.
Load your Graveyard
Use these Spellbook cards to search other Spellbooks and load up your graveyard without losing card advantage. Spellbook Library of the Crescent, Spellbook of Secrets, and Spellbook of Power searches from your deck, while Spellbook of Eternity retrieves from your banish zone.
Fool of Prophecy can mill out from your deck any Spellbook card you want. Charioteer of Prophecy allows you to discard Spellbooks to retrieve Spellcaster monster. Reaper of Prophecy, Spellbook Magician of Prophecy, and Justice of Prophecy allow you to search your deck for Spellbook cards.