- Initial launch date: June 17, 2015
Showdown at Blackrock Mountain is a Tavern Brawl in Hearthstone: Heroes of Warcraft that pits two well-known Warcraft bosses against one another: Ragnaros the Firelord and Nefarian.
- Upon entering the Tavern Brawl, players are randomly assigned as Ragnaros or Nafarian.
- Each hero has its own Hero Power and different deck.
- Ragnaros comes with 60 health, two heroic powers, and a weapon.
- Nefarian comes with 30 health, 30 armor, one hero power, and five mana.
- Winning the first game rewards players with a Classic card pack.