|Book of Eibon|
|Call of the Wild|
|Action: Test Intellect +1.|
Pass: Take 1 horror, discard this card, and gain a "Voice of Ra" Spell card.
Fail: Nothing happens.
|AE-53: Book of Eibon [R]|
|Action: exhaust to attach Book of Eibon to a character. While Book of Eibon is attached, attached character gains an icon.|
Action: unattach Book of Eibon.
|SotD-34: Book of Eibon [F]|
Mind Bending Revelations
|Attach to a character.|
Attached character's controller cannot have more than 5 cards in his hand. If that player has more than 5 cards in hand, that player must choose and discard cards from his hand until 5 cards remain.
Book of Eibon is an Exploration Card that appears in the Mansions of Madness First Edition Call of the Wild, and a Support Card that appears in the Call of Cthulhu: The Card Game Arkham Edition and Summons of the Deep.
SotD-34 appears in the Necronomicon Draft Pack.
The Book of Eibon first appeared in the story The Holiness of Azedarac (Clark Ashton Smith, 1933).
The Book of Eibon, or Liber Ivonis, is a tome penned by the Hyperborean wizard Eibon. The oldest confirmed copy still existing is the ninth-century Latin translation of C. Philippus Faber, which was likely the source of the Latin text printed in Rome in 1662. The Latin copies of the Book of Eibon at Miskatonic and Harvard stem from this particular tradition.
A great deal of Eibon's book is devoted to tales of his own youth, his magical experiments, and his journeys to Shaggai and the Vale of Pnath. The book contains information on the rites of Tsathoggua, the artist Rhydagand, and tales of the great Rlim-Shaikorth. Incantations for calling the emanation from Yoth and the Green Decay are held within, along with formulas for a chemical that petrifies living flesh and a powder that will destroy certain star-spawned monstrosities.
Though the Book of Eibon covers a vast amount of knowledge, only a fraction of the original work survives. For instance, certain rituals intended to call down dholes to serve the summoner have been lost, and an encoded onepage appendix regarding the Antarctic Old Ones is found in only a few volumes.