Spellbook of the Master [CBLZ-EN062] Secret Rare AR9 Set: POP Series 6 Type:

Set: POP Series 6 Type: Psychic Rarity: Uncommon Retreat cost: Colorless

the ATK/DEF of those changed monsters become 0

You can only use this effect of "Darklord Nasten" once per turn

Set: Black & White: Dark Explorers Type: Water Rarity: Holo Rare Retreat cost: Colorless

Spellbook of the Master [CBLZ-EN062] Secret Rare AR9 Set: POP Series 6 Type:Set: 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.