Spellbook Magician of Prophecy [REDU-EN015] Ultimate Rare Tuner/Effect Monster this card gains ATK equal

this card gains ATK equal to the difference

Once per turn: You can discard 1 DARK monster

If you don't have any DARK monsters in your hand to remove

except "Red-Eyes Darkness Metal Dragon"

If this card in its owner's control is destroyed by your opponent's card effect while it has "Galaxy-Eyes Photon Dragon" as an Xyz Material: You can Special Summon this card during your 2nd Standby Phase after activation and double its ATK

Spellbook Magician of Prophecy [REDU-EN015] Ultimate Rare Tuner/Effect Monster this card gains ATK equalSet: Return of the Duelist Card type: Effect Monster Rarity: Ultimate Rare Attack: 500 Defense: 400 When this card is Normal Summoned or flipped face up: Add 1 "Spellbook" Spell Card from your Deck to your hand.