The long-awaited BlizzCon 2017 is finally here and right at the opening, the new one was launched Hearthstone Extension Kobolds & Catacombs announced.

As World of Warcraft Veterans are reminded of the good old days before storm wind when the goblins "You don't take candle!“Roar. The goblins jealously guard their treasures, which are hidden in the caves and catacombs beneath Azeroth's surface.

This is exactly what we are after in the new Treasure Hunt single player adventure.

Hearthstone treasure hunts

Treasure hunts are free and playable several times and Blizzard even provides us with the decks to pass them. At the beginning of the treasure hunt you choose a hero and receive a corresponding deck of 10 cards. So we face 8 random opponents (48 in total), after each victory we have the opportunity to strengthen our deck with 3 cards.

Including extremely powerful cards that were only designed for treasure hunts and cannot be used in normal play.

Those who pass this challenge with all 9 classes receive a special card back: King of the Candles.

Also new are the legendary weapons in Hearthstone: Kobolds & Catacombs. Every class finds one in the catacombs. We were shown the dragon soul as the first new weapon.

Marin the fox

With Marin the Fox comes a legendary adventurer who throws himself straight into the fray. This card will be given to ALL players who log into Hearthstone starting Monday November 6th. Owners of the virtual BlizzCon ticket even receive it as a gold version.

New game mechanics - recruiting

Cards with this ability allow you to summon a random servant from your deck directly onto the field. Some cards have requirements such as: certain mana costs.

So there will certainly be some cool new deck ideas that take advantage of this mechanic and only build very specific servants into the deck.

Overall come with goblins & catacombs 138 new cards and the Hearthstone expansion will be in December appear.