While reading through Player's Handbook 5-th edition Warlock class, I found this paragraph:
If you lose your Book of Shadows, you can perform
a 1-hour ceremony to receive a replacement from your
patron. This ceremony can be performed during a short
or long rest, and it destroys the previous book.
Then, later, reading through Invocations available to the Warlock, there is Book of Ancient Secrets Invocation, which allows the user of the Book of Shadows to inscribe rituals inside it. Comparing those 2 things, my questions is this:
In the event of the Warlock losing his Book of Shadows, so that a ceremony for replacement is held, does the new book contain all the rituals Warlock inscribed in it so far, or are they irrevocably lost and must be written again from scratch?
Best Answer
Since the spells appear and are not written by you, they would be gifts from your Patron and would reappear when you renewed your grimore.
The key wording for this interpretation is the word "appear" in the description from Book of Ancient Secrets. I would definitely rule that any spells you wrote in the book would be gone if the book was recreated (thus the spells you acquire in your travels are lost). However, spells that are gained through class features and can be interpreted as granted by your Patron should be restored when she restores the book via the ceremony.