This card can be used to Ritual Summon any "Libromancer" Ritual Monster. You must also Tribute monsters from your hand or field whose total Levels equal or exceed the Level of the Ritual Monster you Ritual Summon. If you Ritual Summon "Libromancer Fireburst" with this effect, using "Libromancer Firestarter" on the field, it cannot be destroyed, or banished, by card effects.
Target 1 "Libromancer" monster you control and 1 monster your opponent controls; return your monster to the hand, and if you do, take control of that opponent's monster. If your "Libromancer" monster you targeted was not a Ritual Monster, the monster you took control of returns to the hand during the End Phase. You can only activate 1 "Libromancer Displaced" per turn.
When this card is activated: You can add 1 "Libromancer" monster from your Deck to your hand, with a different name than the cards you control. During your Main Phase: You can Ritual Summon 1 "Libromancer" Ritual Monster from your hand, by Tributing monsters from your hand or field whose total Levels equal or exceed its Level. You can only activate 1 "Libromancer First Appearance" per turn.
When your opponent activates a card or effect: Target 1 "Libromancer" Ritual Monster you control; return it to the hand, and if you do, negate that activated effect, then you can Special Summon 1 "Libromancer" monster from your hand or GY. You can only activate 1 "Libromancer Intervention" per turn.
When this card is activated: You can Set 1 "Libromancer" Spell/Trap directly from your Deck, except "Libromancer Origin Story". "Libromancer" Ritual Monsters you control gain ATK equal to their own Level x 100. If a Ritual Monster is Ritual Summoned to your field (except during the Damage Step): You can target 1 Spell/Trap your opponent controls; destroy it. You can only use this effect of "Libromancer Origin Story" once per turn. You can only activate 1 "Libromancer Origin Story" per turn.
If you control a "Libromancer" monster: You can target 1 face-up monster your opponent controls; this turn, that face-up monster cannot be used as material for a Fusion, Synchro, Xyz, or Link Summon. You can only use this effect of "Libromancer Prevented" once per turn. Once per turn, during the End Phase, if you control no "Libromancer" Ritual Monsters: Send this card to the GY.
You can reveal 1 "Libromancer" Ritual Monster in your hand: Special Summon 1 "Fire Token" (Cyberse/FIRE/ATK 0/DEF 0) with the same Level as the revealed monster. While you control that Token, you cannot Special Summon monsters, except "Libromancer" monsters. You can only use this effect of "Libromancer Realized" once per turn.