Spellbook of Judgment (Secret Rare)

During the End Phase of the turn this card was activated, add "Spellbook" Spell Cards from your Deck to your hand, except "Spellbook of Judgment", up to the number of Spell Cards activated after this card's resolution, then, you can Special Summon from your Deck 1 Spellcaster-Type monster whose Level is less than or equal to the number of cards added to your hand by this effect. You can only activate 1 "Spellbook of Judgment" per turn.