Spellbook of the Master [CBLZ-EN062] Secret Rare SM79 A monster that is destroyed

A monster that is destroyed by this monster as a result of battle is removed from play instead of going to the Graveyard

it is unaffected by the effects of Spell Cards

while you control "Toon World"

change its ATK to 0

Must be Ritual Summoned without using "Nekroz of Brionac"

Spellbook of the Master [CBLZ-EN062] Secret Rare SM79 A monster that is destroyedSet: Cosmo Blazer Card type: Normal Spell Rarity: Secret Rare If you control a Spellcaster Type monster: You can reveal 1 other "Spellbook" card in your hand to target 1 "Spellbook" Normal Spell Card in your Graveyard, except "Spellbook of the Master"; this card's effect becomes that target's effect. You can only activate 1 "Spellbook of the Master" per turn.