The next big add-on for Blizzard’s card battler is due out next week.

The developer just announced that Gnomes vs. Goblins goes live Dec. 8 in the Americas (and Dec. 9 everywhere else). This expansion introduces 120 new cards. They all feature themes and characters related to the gnomes and goblins of World of Warcraft’s Azeroth. To get your hands on them, you can craft them, buy them, or win them in the Arena mode. Hearthstone is expected to make a lot of money for Blizzard over the next several years, and it’s updates like this that will help them get to that point.

Hearthstone is a big hit for Blizzard. It is a free-to-play head-to-head card game that lets you collect cards and build your own decks for competitive play. It is out now on PC, Mac, and iPad. And Hearthstone is due out on Android tablets this month and iPhone and Android phones next year.

Gnomes vs. Goblins is the second big expansion for Hearthstone. Earlier this year, Blizzard unleashed Curse of Naxxramas, which introduced single-player missions and new cards. That helped the game bring back old users and generate additional revenue.