Hearthstone: Mean Streets of Gadgetzan

Released December 1, 2016, Hearthstone's fourth expansion, Mean Streets of Gadgetzan, features 132 new collectible cards. Set in the bustling, lawless port city of Gadgetzan, the expansion features characters from the city's three ruling crime families - the brutish Grimy Goons, the assassins of the Jade Lotus, and the shadowy spellcasters of the Kabal. With their own minions, spells and weapons, each family is formed from an allegiance of three different Hearthstone classes, resulting in multi-class cards, usable by heroes of any of those three classes.

Source: [Mean Streets of Gadgetzan The Game Website].