Thaddius Boss Guide

By Fluxflashor Jul 21, 2014
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Thaddius Boss Guide

Thaddius is the thirteenth boss in the Curse of Naxxramas adventure and the final boss of the Construct Quarter.

Normal
Heroic

Heroic Difficulty Strategy

Thaddius starts off with Feugen and Stalagg on the field. They do not have their normal Thaddius summoning abilities but do interact with the player version of the cards. Using your own versions of Feugen and Stalagg against Thaddius can give you a huge minion.
You want to get rid of Feugen and Stalagg as soon as possible. Big Game Hunter or any other removal is key to doing this before you're dead.
Thaddius runs Lightning Storm. Watch out for AoE.
Sludge Belcher can be an annoyance. Use your silences on it!
Thaddius loves Zombie Chow, and you should too; They're a great way to heal up!

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Minion (23) 2x Shade of Naxxramas 2x Nerubian Egg 5x Sludge Belcher 2x Unbound Elemental 2x Dark Cultist 2x Haunted Creeper 2x Spectral Knight 2x Stoneskin Gargoyle 2x Zombie Chow 2x Acidic Swamp Ooze	Ability (8) 2x Lightning Storm 2x Forked Lightning 2x Lightning Bolt 2x Supercharge

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Minion (15) 2x Shade of Naxxramas 2x Nerubian Egg 1x Sludge Belcher 2x Unbound Elemental 1x Dark Cultist 2x Haunted Creeper 1x Spectral Knight 1x Stoneskin Gargoyle 2x Zombie Chow 1x Acidic Swamp Ooze	Ability (6) 2x Lightning Storm 1x Forked Lightning 1x Lightning Bolt 2x Supercharge

Decklists

Heroic Thaddius Freeze Mage Unknown Deck by Fluxflashor - Aug 12, 2014 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (8) 1x Alexstrasza 2x Azure Drake 2x Acolyte of Pain 2x Earthen Ring Farseer 1x Novice Engineer	Ability (22) 2x Flamestrike 2x Ice Block 2x Pyroblast 2x Blizzard 2x Ice Lance 2x Arcane Intellect 2x Cone of Cold 2x Fireball 2x Ice Barrier 2x Frost Nova 2x Frostbolt
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Heroic Thaddius Slayer Unknown Deck by user-16661869 - Aug 12, 2014 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (20) 1x Alexstrasza 1x Deathwing 1x Feugen 1x Leeroy Jenkins 1x Stalagg 2x Big Game Hunter 2x Faceless Manipulator 2x Keeper of the Grove 1x Mind Control Tech 2x Nerubian Egg 2x Sunfury Protector 2x Spellbreaker 2x Ironbeak Owl	Ability (10) 2x Bite 2x Innervate 2x Naturalize 2x Poison Seeds 2x Swipe
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Vargâs's F2P Thaddius Mage Secret Deck Unknown Deck by VargasHS - Aug 12, 2014 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (14) 1x Feugen 1x Stalagg 2x Nerubian Egg 2x Sludge Belcher 2x Water Elemental 2x Dancing Swords 2x Mad Scientist 2x Undertaker	Ability (16) 2x Flamestrike 2x Arcane Intellect 2x Duplicate 2x Fireball 2x Ice Barrier 2x Frost Nova 2x Frostbolt 2x Polymorph
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Reward

Upon defeating Thaddius for the first time, you will receive Wailing Soul, Feugen, and Stalagg. Additionally, you will also gain the ability to craft the Golden versions of these cards.

Videos

Check out these Youtubers who have defeated Thaddius to learn more about the fight.

Curse of Naxxramas Bosses

Looking for information on the Curse of Naxxramas Bosses?

Arachnid Quarter	Plague Quarter	Military Quarter	Construct Quarter	Frostwyrm Lair

Comments

Peppec

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#38 Posted Jan 15, 2019 (Level Up Nerf)

Check my version, nearly 100 % winrate

Heroic Thaddius Easy Peasy Control Warlock Deck by Peppec - Nov 15, 2016 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (16) 1x High Priestess Jeklik 1x Zilliax 2x Corpsetaker 2x Hooked Reaver 2x Sunwalker 2x Annoy-o-Tron 2x Rotten Applebaum 2x Tar Creeper 2x Tar Lurker	Ability (14) 2x Corrupting Mist 2x Curse of Weakness 2x Siphon Soul 2x Drain Soul 2x Spirit Bomb 2x Corruption 2x Shadow Bolt
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zeremwind

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#37 Posted Nov 11, 2017 (Marin's Treasure)

Thanks Moerko, for the inspiration! I modified the deck to suit the cards I have:

Thaddius Betrayer Unknown Deck by zeremwind - Nov 11, 2017 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (22) 1x Chromaggus 1x Emperor Thaurissan 1x Feugen 1x Ragnaros the Firelord 1x Stalagg 1x Faceless Manipulator 1x Vilespine Slayer 1x Devilsaur Egg 2x Nerubian Egg 2x Sludge Belcher 1x Defias Ringleader 2x Spellbreaker 1x Bonemare 2x Pit Snake 1x Plague Scientist 1x Skelemancer 2x Tar Creeper	Ability (8) 2x Betrayal 2x Cold Blood 2x Eviscerate 2x Sap
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Zelgraz

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#35 Posted Aug 3, 2017 (Quest Rogue Nerf)

Heroic Thaddius Reno Rogue Deck by Zelgraz - Aug 3, 2017 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (20) 1x Dr. Boom 1x Feugen 1x N'Zoth, the Corruptor 1x Stalagg 2x Dark Iron Skulker 1x Devilsaur Egg 1x Lil' Exorcist 2x Nerubian Egg 2x Sludge Belcher 2x Unearthed Raptor 2x Spellbreaker 2x Pit Snake 2x Stubborn Gastropod	Ability (10) 2x Betrayal 2x Backstab 2x Eviscerate 2x Shadow Strike 2x Sap
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karven11
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+1
#34 karven11

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Posted May 8, 2017 (Un'Goro Launch)
The Tar elementals from un'goro were pretty good for me in this because they have taunt and they self buff

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hmqaed
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#33 hmqaed

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Posted Feb 28, 2017 (Aggro Downfall)
In my tries he never attacked Animated Armor It was only targeted by his AoE spells

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IYGK

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#25 Posted Oct 15, 2015 (TGT Launch)

I just refreshed the board by conceding, and mulligan'd until I got my misdirections (or drew until fifth card in-hand/2nd turn), and then crossed my fingers for stalagg to cancel out feugen. I honestly thought this wouldn't work after the first 5 tries, because each time they opted to NOT attack each other and instead attack Thaddius in the face or thaddius's other smaller minions... I legitimately thought it was some kind of program-implemented character interaction of some kind...

But yea, after misdirection pulled through for me, it was 100% smooth-sailing from there.

Thaddius Heroic Unknown Deck by IYGK - Oct 15, 2015 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (12) 2x Nerubian Egg 1x Savannah Highmane 1x Cult Master 1x Stranglethorn Tiger 2x Webspinner 1x Houndmaster 2x Starving Buzzard 2x Timber Wolf	Ability (18) 1x Snake Trap 2x Misdirection 1x Powershot 1x Snipe 2x Unleash the Hounds 2x Animal Companion 1x Bear Trap 1x Deadly Shot 1x Explosive Trap 1x Freezing Trap 1x Quick Shot 2x Hunter's Mark 2x Kill Command
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* You can replace quickshot with anything... I just played the game as a secret hunter.

Last edited by IYGK on Oct 15, 2015

BrainmunchR
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#26 BrainmunchR

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Posted Nov 16, 2015 (Explorers)
Wow, great idea!! I was stuck on him until I read this. The misdirection worked for me immediately.

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Diamondtear_HS
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#29 Diamondtear_HS

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Posted May 19, 2016 (Old Gods)
Thank you, for this nice hunter deck! It worked on the first try, and it's really easy to play :-)

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MisterLim
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#32 MisterLim

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Posted Feb 21, 2017 (Gadgetzan)
OMGGG You Genius! Thank you thank you sooo much, I think I love you. I tried milion times with other decks and spend lot of dust.

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tkinase
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#24 tkinase

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Posted Oct 11, 2015 (TGT Launch)
Tried Tommy J's Basic Warlock as seen in this video, only substituted two of the minions with Stalagg and Feugen. Pretty good!

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[NEWBIE] F2P Thaddius Starter Mage Deck Unknown Deck by lanbaluyot - Apr 16, 2015 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (15) 1x Baron Rivendare 1x Maexxna 1x Ethereal Arcanist 2x Nerubian Egg 2x Sludge Belcher 2x Water Elemental 2x Dancing Swords 2x Mad Scientist 2x Undertaker	Ability (15) 2x Flamestrike 1x Ice Lance 2x Arcane Intellect 2x Duplicate 2x Fireball 2x Frost Nova 2x Frostbolt 2x Polymorph
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user-6495181

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#17 Posted Dec 3, 2014 (Naxx Launch)

Thaddius Easy Priest Unknown Deck by user-6495181 - Dec 3, 2014 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (14) 1x Ragnaros the Firelord 2x Auchenai Soulpriest 2x Nerubian Egg 2x Sludge Belcher 1x Stampeding Kodo 2x Dark Cultist 2x Lightspawn 2x Northshire Cleric	Ability (16) 2x Holy Fire 1x Shadow Madness 2x Circle of Healing 2x Thoughtsteal 2x Holy Nova 2x Holy Smite 1x Shadow Word: Death 2x Power Word: Shield 2x Shadow Word: Pain
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clarydog
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#20 clarydog

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Posted Jul 24, 2015 (Blackrock Launch)
Worked like a charm, thanks!

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InputDelay

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#16 Posted Nov 1, 2014 (Naxx Launch)

We used a bit more expensive Warlock deck from Jimbolayya

Heroic Thaddius, Guarenteed Win! Unknown Deck by Jimbolayya - Aug 22, 2014 Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (21) 1x Feugen 1x Stalagg 1x Big Game Hunter 2x Molten Giant 2x Abomination 1x Doomguard 2x Nerubian Egg 2x Sludge Belcher 2x Sunwalker 2x Earthen Ring Farseer 2x Sen'jin Shieldmasta 1x Unstable Ghoul 2x Voidwalker	Ability (9) 1x Siphon Soul 2x Hellfire 2x Corruption 2x Shadow Bolt 2x Soulfire
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Last edited by InputDelay on Nov 1, 2014

Verbaub

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#21 Posted Jul 29, 2015 (Blackrock Launch)

Quote from InputDelay jump

We used a bit more expensive Warlock deck from Jimbolayya

Heroic Thaddius, Guarenteed Win! Unknown Deck by Jimbolayya - Aug 22, 2014

Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck

Minion (21)

1x Feugen

1x Stalagg

1x Big Game Hunter

2x Molten Giant

2x Abomination

1x Doomguard

2x Nerubian Egg

2x Sludge Belcher

2x Sunwalker

2x Earthen Ring Farseer

2x Sen'jin Shieldmasta

1x Unstable Ghoul

2x Voidwalker

Ability (9)

1x Siphon Soul

2x Hellfire

2x Corruption

2x Shadow Bolt

2x Soulfire

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This was a great deck - took a couple of tries to get the mulligan right but a powerful deck that got the job done

NilloCoy
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#23 NilloCoy

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Posted Sep 25, 2015 (TGT Launch)
+1

needed only 4x

Last edited by NilloCoy on Sep 25, 2015

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Arachnelis
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#15 Arachnelis

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Posted Oct 29, 2014 (Naxx Launch)
I FINALLY beat the Heroic Thaddius with the Warlock deck... after like 20 tries with my own decks.

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Unidid
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#14 Unidid

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Posted Aug 16, 2014 (Naxx Launch)
Any ideas for a (budget) priest deck?

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Sinti
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#10 Sinti

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Posted Aug 13, 2014 (Naxx Launch)
on heroic he put 2x lightning bolt to my 4/4 nerub ... u have listed just 1x in his "pack" fyi

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ttringle
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#8 ttringle

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Posted Aug 13, 2014 (Naxx Launch)
What Deck is recommended for the normal fight against this guy?

Last edited by ttringle on Aug 13, 2014

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