Added in last week's patch, another chapter of the Book of Mercenaries adventure is now available and it features our Warlock friend, Tamsin Roame!

Completing all 8 chapters of the adventure will reward you with a free Warlock card pack which contains cards from Standard sets.

Quote From Blizzard

After escaping a vengeful demon hunter in the Barrens, the warlock Tamsin Roame has vengeance on her mind as well. Her bloodthirsty mission will take her to the Alliance's seat of power, the city of Stormwind, Tamsin's home when she was mortal. There she will attempt to unleash the demon Anetheron upon the city. But when Tamsin comes face to face with her own father, will she or anyone in the city survive? Find out when Book of Mercenaries Tamsin launches September 7th. Defeating all 8 bosses in this linear adventure will reward 1 Warlock pack, containing only Warlock cards from Standard!