Book of Heroes will feature a chapter for each of the ten current classes, for a total of 80 missions or bosses. It is completely free to play and available to everyone. Additionally, completing a class's story rewards the player a corresponding class pack.
Mage was the first class and Jaina Proudmoore's story was the first story to be introduced. New missions will be released over the course of the coming months.
For general information on adventures, see Adventure.
Book of Heroes comprises 80 boss encounters in total.
The encounters are split into 10 class' stories, making each consist of 8 encounters.
The player is given pre-made deck for each boss encounter, controls a special hero with their corresponding Hero Power, and gets special interactions between their hero and boss.
During a class' story, the player must encounter the bosses in order and cannot choose the specific ones.
However, if the player loses an encounter, the player can try again without being reset to the first encounter, unlike Dungeon Run or similar modes.
The player can press the "Retire" button, which is under the player's hero portrait, to be reset willingly.
Boss encounters and characters
Below are the current lists of boss encounters and lists of player characters of Book of Heroes. Note that the lists will be updated when there is a new class story to be released over the following months.
Upon completing a class' story, the player can claim a corresponding class pack. As soon as the player defeats the final boss of a story, a following note, titled <Hero name>'s Book of Heroes, appears:
<Hero name>'s Book of Heroes has been completed. Celebrate with a new card pack!