37.0 Patch Notes

Patch 37.0 launches on October 13 and starts the final countdown to the Reign of the Black Empire expansion, kicks off a new Arena season, and more.

Reign of the Black Empire Launches on October 20

Reign of the Black Empire, Hearthstone's next expansion, launches October 20! This 135-card expansion brings the four Old Gods at the height of their power, the new Assemble keyword that lets you create custom minions, and more. Explore every new card in the Card Library, then secure your Pre-Purchase bundles before the war for ancient Azeroth begins!

Reign of the Black Empire Rewards Track Refresh

With the launch of Reign of the Black Empire comes a new Rewards Track, filled with all manner of rewards sure to help you in the battle to come, like XP boosts, cards, Gold, card packs, and more! Acquire the Tavern Pass and reach level 100 to claim the Diamond Rajh Card.

Deck Recipe Updates

A new Deck Recipe is being added for each class featuring new cards from Reign of the Black Empire. The other two deck recipes are a ready-to-play deck using Core cards and a deck featuring cards from Escape from Violet Hold.

Introducing Tavern Rewards

Tavern Rewards are a new way to get even more from your visits to the Hearthstone Battle.net Shop.

The Hearthstone Battle.net Shop is already the place to pick up packs, bundles, cosmetics, Tavern Passes, and more. With Tavern Rewards, eligible purchases can also help you earn Tavern Tender and unlock even more Hearthstone rewards.

Starting October 20, you'll be able to unlock bonus Hearthstone rewards simply by purchasing eligible items in the Hearthstone Battle.net Shop. Whether you're looking to grow your collection, snag a new cosmetic, or save up for something special, Tavern Rewards gives you even more value from every visit.

Unlock Bonus Rewards with Eligible Purchases

Tavern Rewards is simple: Shop. Earn. Redeem.

When you purchase eligible items through the Hearthstone Battle.net Shop, you'll earn Tavern Tender at no additional cost. Then, visit the Tavern Rewards Vault on Battle.net to redeem your Tavern Tender for bonus Hearthstone content.

Explore the Tavern Rewards Vault

The Tavern Rewards Vault is where you'll redeem your Tavern Tender on a rotating collection of Hearthstone goodies.

Expect a mix of packs, signature cards, card backs, hero skins, and more. Some rewards may be community favorites making a return, while others will be brand-new additions available. With new items arriving over time, there's always something new to discover.

We'll have more details on Tavern Rewards soon, including a full look at the rewards available in the Tavern Rewards Vault.

Tavern Rewards will be available in all Hearthstone regions except Mainland China.

Claim Your Free Gift on the Battle.net Shop

Starting every Tuesday at 10:00 a.m. PDT, visit the Battle.net Shop to claim your free weekly reward.

Your Hearthstone Journey Begins Now

Journey is now live! Found in the Hearthstone Journal, Journey combines story, Journey Quests, rewards, events, and seasonal experiences into a single campaign that unfolds throughout an expansion.

Learn everything else you need to know in our dedicated Hearthstone Journey blog.

Take a Tour of the Journal

Everything tied to this expansion lives in the Journal. Here's a quick tour of what you'll find inside.

• Journey: Follow the expansion story by watching voiced vignettes and reading lore.
• Quests: Complete Journey Quests to progress and earn rewards.
• Rewards: Collect rewards from your Journey and expansion activities.
• Feats: Achievements are now known as Feats. New name, same great challenges and rewards.
• Profile: View your progression and account details.
• Bookmarks: Access events, Tavern Brawls, and other limited-time experiences. Use "Go To" to open the experience.

Get Ready for Reign of the Black Empire with Pre-Release Tavern Brawl and Community Days

Pre-Release Tavern Brawl is back, now with an updated format. This is an event where you get to open your Reign of the Black Empire packs early, build a deck, and compete to earn rewards. The new rules are:

• Build decks using only cards from Reign of the Black Empire
• Everyone starts with free trial copies of all Reign of the Black Empire Common and Rare cards*
• Choose from predefined multi-class combinations before constructing your deck
  • Most options combine three classes, while one special two-class combination offers enhanced C'Thun synergies.
• Card Generation Pool: Reign of the Black Empire, Standard

* Access to the Reign of the Black Empire trial cards is temporary and limited to the Pre-Release Tavern Brawl, which starts October 13 at 10:00 a.m. PDT when Patch 37.0 goes live and ends on October 20 at 10:00 a.m. PDT when the expansion launches, after which they are removed.

New Pre-Release Tavern Brawl Feats

If you're looking for a challenge, we've got two feats for you to take a crack at!

• Reign of the Black Empire Pre-Release Champion: Finish a Pre-Release Tavern Brawl run with 6 wins for the Reign of the Black Empire expansion.
  • Rewards: 2x Tavern Tickets, 1x Reign of the Black Empire Pack
• Reign of the Black Empire Pre-Release Pro: Finish a Pre-Release Tavern Brawl run without losing a game for the Reign of the Black Empire expansion.
  • Rewards: Godlike Brawler Card Back, 2x Tavern Tickets

How to Play in the Reign of the Black Empire Pre-Release Tavern Brawl

All players will get one entry into the Pre-Release Tavern Brawl for free. After that, each entry will cost 2 Tavern Tickets*, 300 Gold, or 400 Runestones. On each run, lock in a deck and play until you get either 6 wins or 3 losses and earn more new cards based on how well you do!

* You can obtain 2 additional Tavern Tickets during Community Days! More details in the next section.

Community Days

See what sneaky new decks your favorite creators are making and earn more packs to use in the Pre-Release Tavern Brawl during our Community Days event! See the dedicated Reign of the Black Empire Community Events blog for more information about the Pre-Release Tavern Brawl and Community Days.

Arena Updates

On October 13, with Patch 37.0, all ongoing Arena runs will end, and a new Arena season will begin. This season will use cards from the following sets:

• Reign of the Black Empire
• Across the Timeways
• TITANS
• Showdown in the Badlands
• Perils in Paradise
• Core Set
• Event Set

Cards from Reign of the Black Empire will be incorporated into the card pool on October 13, a week before the new expansion releases on October 20.

Arena Rewards

With the new season comes a fresh reward for achieving 12 wins in Underground: the Il'gynoth Hero Skin for Demon Hunter class. Starting on October 13, it will replace the previous reward Hero Skin. After unlocking it, any subsequent 12-win runs will earn you an alternate prize of 2 Golden Reign of the Black Empire packs.

When Reign of the Black Empire releases on October 20, all Arena and Underground pack rewards will update from Escape from Violet Hold to Reign of the Black Empire.

New Arena Feats

Five new Arena feats have been added for Reign of the Black Empire. For each achievement, Part 1 must first be completed to do Part 2.

• Empire Combatant
  • Part 1: Open 5 Reign of the Black Empire packs.
  • Part 2: Finish an Underground run with 6+ wins.
  • Reward: 2x Tavern Tickets
• Empire Challenger
  • Part 1: Open 10 Reign of the Black Empire packs.
  • Part 2: Finish an Underground run with 6+ wins.
  • Reward: 2x Tavern Tickets
• Empire Rival
  • Part 1: Open 20 Reign of the Black Empire packs.
  • Part 2: Finish an Underground run with 6+ wins.
  • Reward: 2x Tavern Tickets
• Empire Duelist
  • Part 1: Open 35 Reign of the Black Empire packs.
  • Part 2: Finish an Underground run with 6+ wins.
  • Reward: 2x Tavern Tickets
• Empire Gladiator
  • Part 1: Open 50 Reign of the Black Empire packs.
  • Part 2: Finish an Underground run with 6+ wins.
  • Reward: 2x Tavern Tickets

Complete Event Quests, Earn Rewards

Reign of the Black Empire

From October 20 - November 10, travel into the heart of Ny'alotha and explore the Black Empire's sprawling capital as the Old Gods' corruption consumes ancient Azeroth. Complete Event Quests, earn Event XP, and grab these rewards along the way:

• 5x Reign of the Black Empire Packs
• 5x Escape from Violet Hold Packs
• 2x Golden Escape from Violet Hold Packs
• Ritual N'Zoth Hero Skin for Warlock Class

30 Years of Terror

Celebrate 30 years of terror with a special Hearthstone crossover featuring Diablo himself. From a brand-new in-game event to the return of a fan-favorite Tavern Brawl and themed Shop cosmetics, there's no shortage of fire and brimstone to enjoy.

In-Game Event

From November 10 - December 1, Diablo, the Lord of Terror, returns to Hearthstone for a limited-time event celebrating 30 years of terror. Complete Event Quests, earn Event XP, and claim these hellish rewards:

• 2x Treasure Fiend (regular and Golden versions)
• 1x Golden Reign of the Black Empire Pack
• 1x Reign of the Black Empire Pack
• 1x Random Rare Card
• 1x Random Epic Card
• Dark Wanderer Hero Skin for Warlock Class

The Dark Wanderer Tavern Brawl

From November 10 - 18, the Dark Wanderer returns to the Tavern, bringing a sinister challenge that grows more dangerous with every blow you strike. Build a Wild deck, battle through his dark secrets, and when his true form is revealed, face Diablo himself in an epic encounter where your progress carries over between attempts.

• Reward: 1x Reign of the Black Empire Pack

Add Diablo to Your Collection

Claim the Diamond Diablo, Lord of Terror Hero Skin and other devilishly good collectibles in this bundle, available November 10 - December 8.

• Diamond Diablo, Lord of Terror Hero Skin for Warrior Class
• 3x Warrior Packs
• 5x Golden Standard Packs
• 2x Signature Epic Treasure Fiend Cards

New Legendary Quest Chain

From October 23 - November 3, complete this Legendary Quest Chain by playing Ranked Standard games to earn the following rewards:

• Part 1: 1x Reign of the Black Empire Pack
• Part 2: 1x Golden Reign of the Black Empire Pack

The Old Gods Rule Darkmoon Faire Treasures

The corruption of the Old Gods has spread through Darkmoon Faire Treasures, filling it with rewards drawn from the horrors of the Black Empire. ‌

C'Thun Signature Bundle

Behold, Signatures! From October 20 - December 1, rule over the Black Empire in style with a collection of Signature cards featuring the devoted followers of the Old Gods. Every reward in this lineup is a Signature card from Reign of the Black Empire, culminating in a grand prize bundle that includes the Signature C'Thun, Eye of the Empire, plus two copies each of Signature Spawn of C'Thun, Tentacle Lash, and Floating Lessons.

Y'Shaarj Mythic Hero Skin

From October 23 - December 1, Darkmoon Faire Treasures plays host to Y'Shaarj, the Titan Bane, with a new transforming Mythic Hero Skin for Priest and Shaman. It's just one of many dazzling rewards available, and your first pull is free!

Embrace the corruption of Y'Shaarj and bring the horrors of the Black Empire to the Tavern. This Mythic Hero Skin reimagines one of Azeroth's most fearsome Old Gods with elaborate visual effects, unique animations, and a truly monstrous presence.

As Y'Shaarj's influence grows, so does its appearance. After you've played 30 Mana worth of minions, Y'Shaarj transforms into a new Sha-infused form with updated visual effects, revealing an even more terrifying manifestation of the seven-headed horror.

N'Zoth Pet

From November 3 - December 1, welcome an ancient presence from the depths with N'Zoth, the Corruptor! This eerie Hearthstone Pet drifts alongside your matches, partially submerged and always watching with its glowing eyes. N'Zoth reacts to your gameplay in real time with expressive animations and shifting moods. You can interact with your pet by picking up its Murloc plushie or grabbing its fishing rod toy and playing a fishing mini-game to see what unusual things you can reel in.

Earn XP to level up N'Zoth and unlock new skins, including Fish N'Zoth, Brain Jelly N'Zoth, Deep Sea N'Zoth.

Each Pet earns XP differently, rewarding you for the actions they like. Here's how to earn XP with N'Zoth:

• Damage the enemy hero
• Deal 10+ Damage
• Fill your board
• Play 3 minions in one turn
• Summon a Deathrattle minion
• A friendly minion dies on your turn
• In Hearthstone modes, play shadow spells
• In Hearthstone modes, play a 10-Cost card
• In Hearthstone modes, summon an Old God
• In Battlegrounds, sell 3 minions
• In Battlegrounds, destroy an enemy hero
• In Battlegrounds, reach Tier 6
• In Battlegrounds, win a round of combat
• In Battlegrounds, triple an Aberration

Darkmoon Faire Treasures is our random pull system that rewards Pets, Mythic Skins, Signature cards, Hero Skins, and more. The first pull is free, and subsequent pulls require Runestones to purchase. Every pull guarantees a prize. As the prize collections in the Treasures booth rotate, prices adjust to match the value of the current items. Read more about the current value of Darkmoon Faire Treasures, as well as pull rates and odds.

Unite the Four Old Gods

The Old Gods have returned to Hearthstone at the height of their power. Bring C'Thun, Yogg-Saron, N'Zoth, and Y'Shaarj together to unlock special rewards, including an exclusive animated Old God Card Back featuring all four Old Gods.

New Old God Collector Feats

• Old Gods Collector: Part 1 - Collect all 4 Old Gods from Reign of the Black Empire. (Normal, Golden, and Signature versions all count towards completion.)
  • Reward: 1x Golden Reign of the Black Empire Pack
• Old Gods Collector: Part 2 - Collect all 4 Signature Old Gods from Reign of the Black Empire.
  • Reward: Old God Card Back

Please note the Old Gods Collector feat is currently incorrectly displaying earnable collection points (Renown). This feat is cosmetic only, and not earning it will not affect your collection completion. This is a known issue that will be fixed in a future patch.

How to Collect All 4 Signature Old Gods

• Mastermind Yogg-Saron Signature Card: Can be claimed after acquiring all three Golden Reign of the Black Empire Bundles in the chain offer from October 20 - December 1

• C'Thun, Eye of the Empire Signature Card: Eye of the Empire Darkmoon Faire Treasures from October 20 - December 1

• Y'Shaarj, Titan Bane Signature Card: Y'Shaarj Darkmoon Faire Treasures from October 23 - December 1

• N'Zoth, Dream's End Signature Card: N'Zoth Darkmoon Faire Treasures from November 3 - December 1

Reign of the Black Empire Updated Rewards Guide

Bug Fixes

• Hearthstone
  • Fixed a bug where Flames of Infinity always triggered first at the end of an opponent's turn.
  • Fixed a bug where Shadow of Demise interacted incorrectly with Cultist Map.
  • Fixed a bug where Beastspeaker Taka could Discover Colossal minions.
  • Fixed a bug where Spikeridged Steed failed to grant Taunt to the targeted minion.
  • Fixed a bug where adding the Signature version of Reanimate the Terror to a deck could result in an invalid deck being generated by deck auto-complete.
  • Fixed a bug where Haunt could behave like a persistent Aura effect.
• Battlegrounds
  • Fixed a bug where Deities transformed by Mask of Ancient Ones were summoned with reduced stats.
  • Fixed a bug that could cause combat to stall when both warbands consisted entirely of Hoarding Hyenas.
  • Fixed a bug where Stormpike Strength and Frostwolf Fervor could trigger twice during a combat.
• Cosmetics
  • Fixed a visual bug where some Signature cards could briefly appear as their normal versions during animations.
  • Fixed a bug where the Dino Cloner Zerek Hero Skin was missing an in-combat voice line.