The first wing of Naxxramas is out today with each subsequent week being the release of a brand new wing to dig into. The best news? It's free for everyone for a limited time! We've got all the information you need right here to exterminate these creepy crawlies in our database.

You can see a full list of the normal and heroic Naxxramas bosses here and their hero powers here. The uncollectible Curse of Naxxramas cards are also worth a look as they haven't been previewed by Blizzard before; these bosses have some tricks up their sleeves!

And, as we previewed yesterday, you can also find a list of all collective Curse of Naxxramas cards here.

Deck Updates

In preparation for your infiltration of Naxxramas, we've added a new feature to our deck system: you can now mark your deck as being intended to defeat a particular boss. We hope this feature will be especially useful for those taking on Heroic Naxxramas where the bosses are significantly tougher and special decks might help you take them down.

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The Arachnid Quarter Quick Guide

Arachnophobes, cover your eyes! These three bosses and all their cards are particularly creepy and annoying to deal with. It's dangerous to adventure alone in a necropolis, so take us--we've written up some quick summaries of the fights so you don't have to go in blind.

Anub'Rekhan

Anub'Rekhan is a fairly easy fight that relies on good board control. Either zerging him down or stalling him out with impeccable board presence are options, so most decks will work here including default ones. Of course, Druid and Mages are the natural counter to this guy--their hero powers work very well against his. Regardless of the class you choose, it's important to have removal and taunts or else you will get overwhelmed; having the ability to put out a 3/1 every turn gives this spider boss quite an edge.

Anub'Rekhan himself has a fairly solid deck. He has a lot of single target removal from multiple classes.
His DeckRewards
For defeating Anub'Rekhan, you will get two Haunted Creeper cards.

Grand Widow Faerlina

Grand Widow Faerlina is a difficult fight due to her hero power: Rain of Fire. In general, she throws out the tenants of Hearthstone with this ability--actively punishing players for card advantage. Control decks aren't welcome here, she's a fight where you want to rush her down as fast as possible, and as such she's particularly overwhelmed by zoo or other rush decks.

Faerlina uses a lot of warrior cards, relying on hurting herself as well as you to gain power through enrage and deathrattle mechanics. Her unique Worshippers give her even more removal and she did not seem to be capped on how many she could have in a deck; at one point, she had three in play during one of our playthroughs.
Her DeckRewards
For defeating Faerlina, you will get two Nerub'ar Weblord cards.

Maexxna

Don't worry, Maexxna is actually quite a pushover compared to Faerlina! She is the polar opposite of the Grand Widow, encouraging an overwhelming board presence due to her hero power: Web Wrap. Since she can remove a card at random, the more cards you can put into play on a turn the better. Decks that rely heavily on battlecries or combos, such as Miracle Rogue, really shine here. Conversely, if you rely a lot on buffs, she can be more devastating, since there's nothing like losing a card you just put Blessing of Kings on. With Maexxna, you want to clear her board as much as possible--since her hero power can send a card back to your hand, it can benefit you a lot to trade and hope that she sends your wounded card back to your hand effectively healing it to full.

Maexxna herself has a wide range of cards which will overrun the board if left unchecked. Through her deathrattles and cards that buff other cards, she'll go for having a lot of cards in play while using Web Wrap to reduce your presence.
Her DeckRewards
For defeating Maexxna, you will get two Nerubian Egg cards. You will also get Maexxna to call you own--in a slightly less overpowered format.

Curse of Naxxramas Launch Trailer & Announcement

Blizzard also posted a trailer and a news post showcasing the Archnid Quarter's release.

Originally posted by Blizzard (View Original)Collapse

Gather your strongest spells, sharpen those armaments, and dust off your spider-stompin’ boots—Curse of Naxxramas: The Arachnid Quarter has opened its gates to players! Mind the webs—they already know you’re here. . . .
The Arachnid Quarter will be free to all Hearthstone players during the month-long Naxxramas launch event! Every week, a new Naxxramas wing will become available for players to experience. Naxxramas wings will be available for players to unlock in the following order:
  • The Arachnid Quarter
  • The Plague Quarter
  • The Military Quarter
  • The Construct Quarter
  • Frostwyrm Lair
The Arachnid Quarter hosts undead humanoid arachnids and their masters, who are eager to eat . . . er, meet you. Victory over these creepy crawly cretins will reward you with all-new Hearthstone cards!
The undead nerubian Anub'Rekhan is the first boss players will encounter within Naxxramas. Defeating Anub'Rekhan will award you with two copies of the Haunted Creeper card for your collection.
Next, players will challenge Naxxramas’s mistress of venom and premier acolyte trainer, Grand Widow Faerlina. A victory against Grand Widow Faerlina will award you with a pair of Nerub'ar Weblord cards for your collection.
The final boss of Naxxramas is the massive spider, Maexxna. Don’t get wrapped up in all the excitement and miss out on your chance to add two Nerubian Egg cards to your collection for defeating her in a duel.
Defeating all of the bosses within the Arachnid Quarter (Arachnid Quarter Defeated) will reward you with the Legendary Maexxna card for your collection. Your opponents may need to grab a bigger boot*!
Lurking within this wing are two Class Challenges that will become available to players who have defeated all of the bosses in the Arachnid Quarter on Normal Mode. These Class Challenges will put your skills with those specific classes to the test! If you overcome these Challenges, you’ll be rewarded with new class-specific cards to add to your collection.
For those of you looking for a serious challenge, Heroic Mode of the Arachnid Quarter becomes available after you’ve defeated all of the Arachnid Quarter’s bosses on Normal Mode. Heroic Mode bosses are significantly more difficult than their normal versions, and aren’t for the faint of heart (or the arachnophobic).
Experience all of the creepy crawly fun of Curse of Naxxramas: A Hearthstone Adventure by skittering in to the Arachnid Quarter for free today!
*Conveniently available within the garden on the Pandaria board.

Curse of Naxxramas Patch Notes

Blizzard also posted the patch notes. One change of note unrelated to Naxxramas is that Eaglehorn Bow was nerfed this patch, now only gaining durability with friendly secrets.
Originally posted by Blizzard (View Original)Collapse

  • Curse of Naxxramas offers a new single player campaign to play Hearthstone against challenging NPC adversaries. Curse of Naxxramas can be unlocked with gold or real money and can be accessed by players that have unlocked all 9 heroes.
  • Defeat 15 fearsome bosses to unlock a total of 30 new Hearthstone cards for your collection, including Legendary cards! Naxxramas cards can easily be searched for within My Collection using the search function.

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  • An all-new interactive Naxxramas-themed game board awaits you within the Adventure! Discover the surprises that lurk inside the slime pools, the quivering masses of spider eggs (spoilers: It’s spiders), and more!
  • Surmount 9 diabolical Class Challenges that test your skills with each of the unique classes of Hearthstone!
  • Defeating all of the bosses within a wing unlocks the extremely challenging Heroic Mode of that wing. Defeating all of the bosses of Naxxramas on Heroic mode unlocks a new card back for your collection.
  • Five unique wings await those brave enough to venture into Naxxramas. The first wing, The Arachnid Quarter, will immediately be available to play for free for a limited time. The remaining four wings are immediately available for players to unlock with real money or gold, and will become accessible over a period of time once unlocked. 
    • The Arachnid Quarter – A web choked maze filled with many-legged minions.
    • The Plague Quarter – Necromancers brew deadly plagues while a fungal monstrosity lies in wait.
    • The Military Quarter – Tireless undead knights perfect their deadly arts within these chambers.
    • The Construct Quarter –Abominations stitched together from the Scourge’s victims stomp through these slime soaked halls.
    • Frostwyrm Lair – Chilly abode of Sapphiron and the arch-lich Kel’thuzad himself. (A curse upon my air conditioning bill!)

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General

  • Marking yourself as “Busy” within the Battle.net desktop app will suppress incoming chat messages and toasts for friend requests.
  • The Shop interface has been updated to include Curse of Naxxramas.
  • Cards available within each wing of Naxxramas will become available in the Arena when that wing becomes available to play.
  • The order in which Deathrattle abilities resolve has been updated to be more consistent.
  • Additional music tracks have been added.
  • Players that appear in “Players Near Me” now appear more prominently within the Friends List.
  • Overall organization of the Friends List has been improved.
  • Sounds and graphics that occur when Mass Disenchanting now take less time to complete.
  • Cards can now be searched for using the artist of the card art in the Collection Manager.
  • [iPad] Improvements were made to increase stability, especially for iPad 2 and iPad mini.
  • [iPad] Tooltips that appear when selecting an object by touch are now positioned in a more intuitive place.

Card Changes

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  • [card=1662] now reads “Whenever a friendly Secret is revealed, gain +1 Durability”.

Practice Mode

  • Practice Mode is now entered through the Solo Adventures button on the main menu.
  • The AI in Practice Mode is now better at Hearthstone.

Bug Fixes

  • Improved various tooltips.
  • Resolved various issues regarding audio, text, animation, and display.
  • Resolved various issues that could cause cards to get stuck on the battlefield.
  • Actions should now be accurately represented in the play history.
  • The red targeting cursor will now properly track where you mouse cursor is pointing for your opponent in Play and Arena Modes.
  • The turn timer in a Friendly Challenge now calculates time correctly.
  • All Soulbound Common cards can now be properly found when searching for “Common” in the Collection Manager.
  • Disenchanting will now properly update the amount of Arcane Dust you have.
  • The side of the board is no longer visible on the Arena screen in specific resolutions while in windowed mode.
  • The XP bar for max level heroes no longer appears empty.
  • You are now able to properly select a friend by clicking on their Play Mode medal.
  • An incorrect version of the Hero Power icon will no longer appear when switching between golden and non-golden heroes while the Choose Opponent menu is displayed.
  • The Friendly Challenge button will now properly appear next to friends who have recently logged in or have been added to your friends list.
  • The Shop window no longer incorrectly closes when clicking within the Shop UI.
  • The scroll bar will no longer jump to the top of the Friends list when moving the cursor over the Last Played area of the Friends list.
  • Clicking the End Turn button at the very start of your turn no longer prevents the End Turn button from flipping back.
  • Resolved an issue where conceding can cause the client to crash.
  • The resolution time of certain spells has been shortened.
  • Resolved an issue with Brawl where the last minion to enter the fray was always the victor of the ensuing battle.
  • Resolved various issues with the Sword of Justice.
  • Resolved an issue with Shield Slam where it was being unaffected by Spell Damage if the Hero had 0 Armor and now has Spell Damage sparklies.
  • A weapon that is equipped on your turn will no longer have the attack value appear on the sheathed weapon on some resolutions.
  • [iPad] Improved notifications to properly indicate when your account has been logged into from another device.
  • [iPad] It is now more obvious when a daily quest is successfully replaced.
  • [iPad] The Social button no longer stops working after locking the device.

Mac

  • Improvements were made to stability.