Hearthstone Releases Reign of the Black Empire Expansion
The update introduces 135 new cards and a new keyword alongside the Tavern Rewards system.
Updated on Oct. 21, 2026 in eSports
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Blizzard has launched the Reign of the Black Empire expansion for Hearthstone, featuring four legendary Old Gods and a new Assemble keyword. Players can now utilize the Tavern Rewards system to earn currency through eligible Battle.net Shop purchases.
Why it matters
The expansion brings significant gameplay changes through the Assemble mechanic, which allows players to create custom minions by combining card text. These additions, paired with the new reward structure, aim to refresh player engagement and progression.
The expansion adds 135 new cards to the game, while players reaching level 100 on the new Tavern Pass earn a Diamond Rajh card. The update also accompanies the release of Patch 37.0, which includes various technical bug fixes.
The players
Blizzard
Blizzard is a prominent developer and publisher of video games responsible for titles such as Hearthstone and the Diablo series.
The details
The expansion centers on the Black Empire in Azeroth, bringing C'Thun, Yogg-Saron, N'Zoth, and Y'Shaarj into the game. Patch 37.0 also introduces updates to Hearthstone, Battlegrounds, and cosmetic items.
Timeline
October 20, 2026: C'Thun Signature bundle begins.
October 21, 2026: Reign of the Black Empire expansion release.
October 23, 2026: Y'Shaarj Mythic skin release and Legendary Quest Chain start.
November 3, 2026: N'Zoth pet availability and Legendary Quest Chain ends.
November 10, 2026: Diablo crossover event and Dark Wanderer Brawl begin.
Season Trajectory
The expansion aligns with broader industry trends of celebrating legacy content through limited-time events, such as the upcoming Diablo crossover. This release positions Blizzard to maintain player retention throughout the season by mixing new card mechanics with established franchise lore.
Players can now accumulate Tavern Tender through Battle.net Shop purchases to progress through the reward tiers. Achieving level 100 on the Tavern Pass unlocks the exclusive Diamond Rajh card for deck collections.
The takeaway
The addition of the Assemble keyword creates new strategic depth by allowing players to combine card text for custom minions. Players looking to optimize their rewards should focus on the new Tavern Pass tiers to secure high-level cosmetic cards.
What happens next
A Diablo crossover event and the Dark Wanderer Tavern Brawl are scheduled to begin on November 10, 2026, running through December 1.
Further reading
For more information on the latest competitive updates, visit the eSports section.
Source note: This article includes information reported by Inquirer.
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