Book of Orcus' Hate (3.5e Equipment)
From D&D Wiki
Book of Orcus's Hate
"The book of Orcus's Hate has been passed from one powerful user to the next. Scribed by a loyal thrall to The Prince of Undead, Calinor,It then fell to a monk of Graz'zt. When the book reached the temple, The Dark Prince sense it presence, And called for his followers to bring it to his Keep. The Dark Prince kept it the book for his own use for nearly two hundred years. While he was out on a "Trip", A brave, Or Foolish, Cleric, Who had set out to kill Graz'zt, Came across the book. As the Book crossed hands for the next fifty years. No one has found it, Or spoken a word about it. All its past owners have died with no trace."
The Book looks like a typical Necromancers Mage's Book. It is bound in black leather, Silver engravings on the corners with fine details as if done by a master craftsmen. All the pages are blank, And have no signs of us. A closer inspection shows the Pentagram on every engraving. The final detail that one will see, A slot in the back of the book that holds a pitch black quill.
When someone writes anything in the book, What ever the topic is, 'Blinks' out of reality. If one writes about their own life, all their history is gone. No one remembers it. Nor are there any traces. Even if it changes history. This does not make it as though one was never born, unless they speak of when they came to be.
If someone tries to Scribe a spell, Everyone that had knowledge of any kind of the spell losses the knowledge, and the spell no longer can be used, By any means. All text about the spell is suddenly missing, Not limited to scrolls, books, or Pictures.
All objects go missing and all knowledge is lost on said object. If someone was in use of the item, Or any events with said item is wiped clean from history and all traces of the item as gone as well.
The only one that retains ANY knowledge of anything in the Book is the one who put it in. So if one person writes it into the book, They are the only person to know of the topic.