Blizzard Entertainment has released the official trailer for their upcoming adventure in Hearthstone: Heroes of Warcraft, One Night in Karazhan. Much like the other adventures and expansions released for Hearthstone, One Night in Karazhan does not take itself too seriously. While in World of Warcraft Karazhan is dark and gloomy, in Hearthstone, it is made to feel vibrant and alive, everything players have come to expect when playing Hearthstone. Karazhan, long a potent nexus of arcane energies, is about to become the focal point of a very different kind of cosmic force. The wizard Medivh has used every bit of magic at his disposal to set up the most lavish and extravagant party of all time, and your name is on the guest list alongside the crème de la crème of Azeroth and beyond! With such an eclectic mix of attendees, it’s guaranteed that this party will be out of this world. But as you groove to the music and let the sights dazzle you, beware; one night in Karazhan, and even tough guys tumble. Keep your decks straight, your wits sharp, and above all, stay alive! [Via Hearthstone] According to the official Hearthstone website, this new adventure will offer players 45 all new cards, two of which can be earned by completing the prologue, which is free for all players. The biggest party of the year kicks off with a free prologue mission that is sure to put you in the mood to groove. No guest of Medivh’s will leave Karazhan empty-handed—you’ll receive two copies each of Enchanted Raven and Firelands Portal just for checking out the prologue! Of course, attending the party proper will be more than worth your while, as you’ll take home 43 more sparkling new Hearthstone cards as party favors to commemorate the event. One Night is Karazhan will be offering multiple ways to gain access to all of the different wings. As stated above, the prologue is free for all players. After the prologue is completed, players will either have to use real world currency or in-game gold to purchase additional wings of Karazhan. Since its release in 2014, Hearthstone: Heroes of Warcraft has released three other adventures, including: Curse of Naxxramas, Blackrock Mountain and League of Explorers. One Night in Karazhan is scheduled to be released on August 11, 2016. [Via Hearthstone]