Like Book of Heroes, Book of Mercenaries featured a chapter for each of the ten classes that existed before Patch 25.0.0.158725, 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.
Warrior was the first class and Rokara's story was the first story to be introduced. New missions were released over the course of the Year of the Gryphon.
For general information on adventures, see Adventure.
Book of Mercenaries 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 is the list of boss encounters and player characters for Book of Mercenaries.
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 Mercenaries, appears:
<Hero name>'s Book of Mercenaries has been completed. Celebrate with a new card pack!
In addition to the collectible cards from card sets, Book of Mercenaries brings many unique cards, Playable Heroes, Hero Powers and many more available only during the boss encounters.
Rokara
Xyrella
Guff
Kurtrus
Tamsin
Cariel
Scabbs
Tavish
Bru'kan
Dawngrasp
Patch 20.0.0.77662 (2021-03-25): Added.
Book of Mercenaries
