The warlock snake but in a different art style, albeit here is a glimpse of his Patron. Both he and you stared into the abyss and she is now looking back upon you.

His book is a legendary artifact, each page is an entire timeline, reading any page can destroy a persons mind as the book contains an inconceivable amount of information, so long as the book is open it provides Thernax with a view of time and space, albeit she often shows such things in an easily interpretable manner that is designed to provide her with maximum entertainment.