The final mission set, coming a week later on August 24, is Showdown with the Lich King: The Frozen Throne. All told, Knights of the Frozen Throne has 135 new cards, including Legendary Death Knights Hero Cards, and a new Lifesteal keyword.
The first mission set, which is set to go live today but is not, however, live for all players as of publish time, contains the Rise of the Frozen Knights prologue and The Lower Citadel, featuring “three bosses.”
The second mission set, Battle for Icecrown Citadel: The Upper Reaches, hits August 17, and has three additional bosses.
Blizzard has revealed details of the eight Knights of the Frozen Throne missions rolling out over the next several weeks.