https://www.gamespot.com/articles/all-the-hearthstone-kobolds-and-catacombs-cards-re/1100-6455393/

The next expansion for Hearthstone: Heroes of Warcraft releases in just a couple days and, true to form, Blizzard is giving players an advance look at all the new cards coming in Kobolds & Catacombs. It has now released images of all 135 new cards. You'll find every one of the new additions in the gallery below.

When it launches on December 7 (December 8 in Europe), Kobolds & Catacombs will bring new card types such as Spellstones and Unidentified items. The expansion will also bring a new single-player mode called Dungeon Runs, which Blizzard says has 48 different encounters.