Dantalian no Shoka Wiki
The Sage’s Plate
Sage's Plate infobox

Original Name


Romanized Name

Kei-sha no Sekiban




Chapter 4 (light novel 3);
Episode 5


It creates invisible walls.


Lord Moskin


Inside the Dantalian's Bookshelf

The Sage’s Slate is a Phantom Book read by Lord Moskin to protect Viola Duplessis and her other suitors from quartz crystals used by Melgar as piercing projectiles. It's present in The Magician’s Daughter story.

In the anime, it’s shown as an irregular shaped grey stone slate. Its fake version has a yellow cover showing yellow quartz crystals.[1] Originally, the forfeit obtained by Lord Moskin is an old stone tablet.[2]


According to Dalian, The Sage’s Slate is a lost Phantom Book, extremely difficult to obtain. Blind by love, Lord Moskin ended up buying a fake exemplar. The real Phantom Book is sealed inside the Labyrinth Library.

The Sage’s Slate is one of the five Phantom Books requested by Viola Duplessis to her suitors. Although the courtesan had no memories, she felt that the items were necessary to oppose the imminent threat represented by a powerful magician known as the Earl.[2]


The Phantom Book creates invisible walls as shields which block even magical attacks. For instance, Lord Moskin used it to protect Armand from quartz crystals shot by Melgar.[2] As seen in the anime, The Sage’s Slate and its user are covered in blue light. In the adaptation, Lord Moskin summons a blue barrier, resembling a thick wall made of crystal or glass.[1]

Sage's wall

Lord Moskin summons a magical wall.


In the anime, Lord Moskin is briefly seen reading The Sage’s Slate.[1]

"Truth is the shadow, fabrication is the light.
The sage seeks the shadow,
and shuns the light.”


Lord Moskin

Lord Moskin holding the fake Phantom Book.

Lord Moskin is one of Viola’s admirers who showed up at the Disward estate looking for a specific book, right before Armand. Hugh and Dalian learn that Viola Duplessis requested five Phantom Books to her suitors in exchange of her hand in marriage. Later, the courtesan explains how she feels that the Phantom Books are necessary to oppose the Earl, who will come for her soon.

The next full moon night, Viola’s mansion is crowded with men trying to protect her. Lord Moskin also appears, showing a tablet supposed to be The Sage’s Slate. Hugh and Dalian suggest that the five Phantom Books obtained by Viola’s suitors are fakes. Lord Moskin presents his Phantom Book to soothe the worried courtesan.

During the confrontation against Melgar, Lord Moskin and the others stand in front of Viola to protect her. When the Earl charges a powerful fireball, Dalian gives Hugh the right to open the Labyrinth Library. The five men next to Viola are chosen by the five Phantom Books. Melgar transforms the rubbles of Viola’s mansion into quartz crystals to attack Armand. The projectiles surround him. However, Lord Moskin uses The Sage’s Slate to save Armand, creating countless invisible walls. The crystals roll on the floor without power, returning to its original form. Melgar eventually admits defeat and retreats. Lord Moskin gives the Phantom Book back to Hugh.[2]

In the anime, Hugh is seen in his child form, holding The Sage’s Slate inside the Labyrinth Library.[1]


  • Curiously, the fake Phantom Book has quartz crystals on its cover.[1] The real Phantom Book is used to block quartz crystals sent by Melgar as projectiles.[2]
  • A different shield comes out from the Book of Styx.[3]


Phantom Books
72 Sacred Notes of the Shem-ha-mephorash - Atargatis Scripture - Book of a Thousand Sorrows - Book of Adventure - Book of Atonement - Book of Avalon - Book of Equivalence - Book of Fairy - Book of Fetus - Book of Gap - Book of Humanization - Book of Hypnosis - Book of Lifetime - Book of Relationship - Book of Styx - Book of the Eleusis Ritual - Book of the House-Elf - Book of Imprint - Book of Meditation of Supreme Cooking - Book of Oblivion - Book of the Outer God - Book of Paradise - Book of Royal Power - Book of the Sage - Book of the Salamander's Seal - Book of Sleep - Book of the Descendant of the Mist - Book of the Feast of the Dead of the Windowless Hall - Book of the Flatterer - Book of the Jealous Girlfriend - Book of the King's Coffin - Book of the Ritual of the Migratory Locusts - Book of the Silver Well - Book of Those Who Want Beauty - Book of Twilight - Book of Wisdom - Catalogue - Collection of Visions - Crastinus Dies Nunquam Sciat - Decorative Plywood of Merneith - Depiction of Mountains and Rivers - Divine Encyclopedia of the Yin Kings - Divine Pattern of Floating Silk - Faceless Book - Fata Morgana - Go in an Instant - Hezār Afsān - Hymn of Hel - Logbook - John Wilkes Booth’s Diary - Kairos’ Dynastic History - Loge - Memories of That Day - Old Bradshaw’s Timetable - Pioneer Book - Phantom Book of Resurrection - Phantom Score - Rahōto Reihō Kaigen - Ritual of Reality - Template Book - The Aggregate of Burning Golden Beads - The Clay Tablet of Ugarit - The Dictator's Book - The Great Queen Poem - The Harlequinade - The Nāgārjuna’s Manuscript - The Ophiuchus Manuscript - The Pedigree of All Creations - The Sage's Slate - The Scent God's Scripture - The World - Vignette of Eternal Twilight

Phantom Book Eggs - List of Phantom Books