Chronomicon

The Chronomicon is said to be a powerful tome of time magic, in which the pages of history are recorded, sometimes before they happen. Whenever it shows up, the course of history is said to be changed, though who says that is uncertain at this time. Heh, get it? At this time... oh, never mind.

Origins
As with any powerful artifact there are many stories and legends surrounding their creation. The most common legend for the Chronomicon tells of a group of students performing a powerful ritual that would send a blank book through time. As they opened a rift in space-time the book would ripple out of existence. At the completion of the ritual it would be replaced with a modified version of the original, adorned with magnificent runes and gears, its pages filled to the brim with stories of time travel, exotic cantrips, ledgers of student expenses and the odd inappropriately named recipe.

Even today it is not uncommon for students to whisper of hidden rooms and rituals, in hopes of obtaining the means to summon to book, if not so much to gain wisdom from it as it is to contribute to the legendary book, so that their addition will live on forever throughout time...

Contents
Pages have been stuffed in, added to make room for maps and diagrams of fantastic creatures. It is said that there is at least one fold-out that contains the image of the person(s) the observer adores/lusts after.