This magical writing bestows spell use ability upon its possessor, but upon first reading the work any character not already able to use spells will suffer 5-20 hit points of damage and be stunned for 5-20 turns. Thereafter, he or she can examine the writing without further harm. 

The book of infinite spells contains from 23-30 (22 + d8) pages. The nature of each page must be determined by random die roll. Use the following table:

If a spell is written on a page, roll d10 for all except magic-user spell, for which a d12 is rolled, to determine spell level. Results of 8-10 (or 10-12) indicate a d6 (d8 for magic-user spells) is to be rolled instead. When level is known, determine the particular spell by random means also. Record page contents secretly, and DO NOT REVEAL THIS INFORMATION TO THE HOLDER OF THE BOOK.

Once a page is turned it can never be flipped back, i.e. paging through the book is a one-way trip. When the last page is turned, the book vanishes.

The owner of the book of infinite spells can cast the spell to which the book is opened, but once per day only, unless the spell is one which the character would normally be able to cast by reason of class and level, in which case the spell can be cast up to 4 times per day due to the book's magical powers. The book need not be in the actual presence of the owner in order to empower spell ability, so he or she can store it in a place of safety while adventuring and still cast spells by means of its power. Each time a spell is cast there is a chance the energy connected with its use will cause the page to magically turn (despite all precautions). The owner will know this and possibly even benefit from the turning by gaining access to a new spell. The chance of a page turning is as follows:

Treat the spell use just as if a scroll were being employed, including time of casting, spell failure, etc.