When this card is Special Summoned by the effect of a Spellcaster-Type monster or a Spellbook Spell Card: You can target 2 Spellbook Spell Cards in your Graveyard; add those targets to your hand. You cannot Special Summon other monsters during the turn you activate this effect. When you add card(s) to your hand by this effect: You can reveal 4 Spellbook Spell Cards with different names in your hand; destroy all other cards on the field.