This ancient tome has a portion of Aureon‘s knowledge and law. At times the pages will open to grant its boon to its owner. 

At times the book will open to give advice.

When you make an ability check or a saving throw, you can use this feature to add a d10 to your roll. You can do so after seeing the initial roll but before any of the roll’s effects occur.

Once you use this feature, you can’t use it again until you finish a short or long rest.

Notes: Spell caster only. Need to hold the book for 8hrs to attune.