Dukhogon's Infinite Tome

The book used as the material component of this spell is enchanted to hold an infinite number of blank pages. When turning the page in this book, there is always more room to write or draw. If the book is already full before the spell is cast, the blank pages begin directly after the final full page. The additional pages are stored extra-dimensionally, leaving the weight and external dimensions of the book the same.

In addition, one target creature within range for the entirety of the casting is designated as the book's Curator (you can target yourself). The Curator is able to open the book to any desired page without effort or searching, as the book responds to their thoughts and intentions. Any other creature attempting to open to a particular page must succeed on an Arcana check against your Spell Save DC to find what they're looking for without going page by page. You can change the designated Curator for a particular book by recasting the spell with the new Curator present for the entire casting.

Bookmarks, or any other inanimate objects left partially within and partially outside of the pages of the book, fall out harmlessly as they are shunted from the extra-dimensional space of the book. Small, thin objects kept entirely within the pages, such as pressed flowers or insects, are stored harmlessly and preserved as if kept in ideal conditions. Attempting to earmark a page deals 1d4 lightning damage to the creature attempting it, even the book's Curator, amd the page unfolds itself pristinely, showing no signs of wear.

If the book is dispelled, any pages with writing, drawings, or items past the original length of the book fall out as loose pages on the ground, harmlessly shunted from the extra-dimensional space before it ceases to exist. These pages can be added back into the same book with the Mending spell, but only if this spell is cast and active on that book again.