Book of darkness

The Book of darkness is a book held in place of a shield, and is the God book aligned with Zaros. It can be purchased from Jossik for 5,000 coins after completion of the Horror From The Deep quest along with The Dig Site quest. Although, if a player has any other god books, (such as a Saradomin's holy book) those books must be filled up with their pages before you can obtain any other type of book from Jossik. Ancient books must be made using all four torn Ancient pages which can be purchased from other players, obtained from treasure trails or by cremating a Vyrewatch. Equipping a Book of darkness allows the player to preach and perform ceremonies, such as blessing, last rites, and wedding rites by operating it (none of which have any effect on the game itself, and are simply recited lines of text). Lost Books of darkness can be reclaimed at the Lighthouse by speaking to Jossik, complete with all pages that have been added, for no cost. It is worth noting that the book's pages sound as if they were written recently since the book talks about followers of Zaros being oppressed however while when Zaros was in power he had great influence and many followers.

Performing blessings, wedding ceremonies, last rites or preachings uses up 25% of the special attack bar.

Partnerships

 * Ye faithful and loyal to the Great Lord, May ye together succeed in your deeds, Ye are now joined by the greatest power.

Last Rites

 * Thy faith faltered, no power could save thee. Like the Great Lord, one day you shall rise again.

Blessing

 * By day or night, The power of the Great Lord be with thee.

Preach

 * Though your enemies wish to silence thee, Do not falter, defy them to the end. Power to the Great Lord!
 * The followers of the Great Lord are few, But they are powerful and mighty. Power to the Great Lord!
 * Follower of the Great Lord be relieved: One day your loyalty will be rewarded. Power to the Great Lord!
 * Pray for the day that the Great Lord rises; It is that day thou shalt be rewarded. Power to the Great Lord!
 * Oppressed thou art, but fear not: The day will come when the Great Lord rises. Power to the Great Lord!
 * Fighting oppression is the wisest way, To prove your worth to the Great Lord. Power to the Great Lord!

Trivia

 * The Book of War and the Book of darkness are the only God Books that say "Partnerships" instead of "Wedding Ceremony".
 * The Book of War and the Book of darkness are the only two that do not say the gods name when reading from them.