If you control a Spellcaster-Type monster: You can banish up to 3 'Spellbook' Spell Cards from your Graveyard; apply this effect, depending on the number of Spell Cards banished for this card's activation. You can only activate 1 'Spellbook of Fate' per turn.
● 1: Return 1 Set Spell/Trap Card to the hand.
● 2: Change 1 monster on the field to either face-down Defense Position or face-up Attack Position.
● 3: Banish 1 card your opponent controls.