Hearthstone unveils the new Adventure mode
A new game mode is coming to Hearthstone: Adventure. Within this mode players will be able to play in a single player campaign, face bosses and earn new cards. Who manages to defeat all the bosses will be able to unlock a chest and obtain a new legendary card.
The first adventure to be released is called Curse of Naxxramas and is going to add to the game 30 brand new cards and several bosses each one with its unique minions, ability and emotes.
Moreover, a new "class challenges" mode will be available to the players. In this game mode you will need to win a duel by using a predetermined class and deck. If you wil you will obtain one of the 30 new Naxx-themed cards.
Source of informations: Blizzard press release