The Blackrock Mountain Adventure pack was announced for Hearthstone: Heroes of Warcraft by Blizzard at PAX East today.
The content includes the Dark Iron dwarves, fire elementals, and dragons, as well as Ragnaros the Firelord.
Those who manage to bring an end to the villains will be rewarded with 31 new cards inspired by the Blackrock Mountain and its denizens which will aid players in the metagame.
Blackrock Mountain will release in April, one wing per week for the entire month. It will be accessible with 700 in-game gold or for $6.99 per wing. You can buy the entire adventure for $24.99.
Pre-orders will be available starting March 19, and will include an exclusive card back.
Further details, including specific launch timing, will be announced in the weeks ahead.
Hearthstone is available for PC, Android tablets and iPad.