Blizzard has announced that the next expansion for Hearthstone will be launching on August 10th. The expansion will be called Knights of the Frozen Throne which brings 135 new cards to the game, including Legendary Cards. Legendary cards can turn the nine heroes into Death Knights with modified powers. To make things even more exciting, there will be eight free missions that will yield a Legendary card on completion of each of the completed wings. Also, The Lich King has been invited to Blizzard HQ to help redecorate the Hearthstone area.

Players can also prepurchase a 50-card pack for $49.99.

Hearthstone: The Lich King at Blizzard, Part 1