Deceptively simple in design but epically engaging, Hearthstone will be instantly accessible to players regardless of their familiarity with Warcraft or collectible card games. Whether players prefer to wield magic or arms in battle, strike from the shadows or head on—or have never given any of that much thought—they’ll be able to jump right in, create a deck, and get in on the card-slinging action.

In addition to honing their skills in practice matches against the computer and taking on their buddies via their Battle.net friends list, players can challenge each other in two competitive game modes. “Play Mode” features traditional head-to-head battles, with players facing off for a chance to increase their medal ranking and earn card packs along the way. And for a different type of challenge, players can enter “The Forge,” where they start each match by building a deck from a new set of cards, and then use that deck to duel other Forge participants. Aside from winning new cards, players will be able to round out their collections by purchasing new card packs or disenchanting some of their existing cards to craft the ones they’re missing.

With hundreds of cards to choose from, featuring a wide range of colorful Warcraft spells, weapons, and characters, players will have limitless possibilities for developing and fine-tuning their deck-building strategies.

Equip your dancing shoes and make sure you’re properly attuned, because you’re invited to the hottest party in the Eastern Kingdoms! One Night in Karazhan is a brand-new Hearthstone Adventure that takes players inside Medivh’s tower, Karazhan, for a truly enchanted experience. As Azeroth’s most powerful mage, Medivh’s magical prowess is surpassed only by his love for extravagant shindigs, and he has spared no expense to entertain his cherished guests—lavish feasts, impeccable Opera performances, and more await you inside.

“One Night in Karazhan will give players the chance to party with Medivh while earning some great new cards for their collections,” said Mike Morhaime, CEO and cofounder of Blizzard Entertainment “We’re excited to reimagine one of Azeroth’s most beloved locations in Hearthstone, and we can’t wait to see players put their new decks to the test.”

Once you arrive at the party, you’ll find that Medivh has gone missing—and his collection of arcane objects is running amok throughout the castle. It’s up to you and Moroes, Medivh’s trusted butler, to keep the party under control and find your host, while still finding time to enjoy the amenities! With a lineup of iconic characters to encounter, everyone’s favorite enchanted chess board, and 45 groovy new cards to add to your collection, One Night in Karazhan promises to be an Adventure to remember.

Class Challenges: Class challenges will test players’ skills with each class in duelsusing specific premade decks. Partygoers who emerge victorious in each class challenge will be rewarded with a glimmering new One Night in Karazhan-themed class card (one of the 45 new cards available in this Adventure).

Heroic Mode: Once all of the bosses in a wing have been defeated, players can take on a far-more-challenging version of each wing in Heroic Mode. These fights are immensely difficult, so a little improvisation might be required to emerge victorious. Defeating Heroic Mode will grant the player a One Night in Karazhan card back, perfect for showing off such an accomplishment!

The Arena: After each wing is released, the cards available in it will be added to the Arena mix for everyone to play with, regardless of whether they’ve played through the Adventure.

The party starts August 11 on Windows and Mac PCs; Windows, iOS, and Android tablets; and iOS and Android mobile phones, and the fourwings of One Night in Karazhan will open on a weekly basis (one per week). One Night in Karazhan will be available in the in-game shop in full for $19.99 USD, one wing at a time for 700 gold or $6.99 USD each, or in discounted bundles based on the number of individual wings already purchased. Upon release, all Hearthstone players will be able to play a prologue mission free and earn two of the Adventure’s new cards. In addition, players who purchase the full Adventure during the first week of its release will receive a special Karazhan-themed card back.