Control Warlock Deck List Guide (Post Nerf) – Kobolds – March 2018

Class: Warlock - Format: Mammoth - Type: Control - Style: Meta Deck - Meta Deck: Control Demon Warlock

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Deck Import

Our Demon Control Warlock guide for the Kobolds and Catacombs expansion features the best deck list for this archetype. This Warlock guide includes Mulligans, Gameplay Strategy, Card Substitutions, and Combos/Synergies!

Introduction to Demon Control Warlock

Demon Control Warlock is a new deck from Kobolds and Catacombs that abuses Possessed Lackey to accelerate Voidlord onto the board. While controlling Warlock decks (even those using Demon synergy) have existed since the beginning of Hearthstone, this one is very different, as it only runs one Demon and doesn’t run any Giants. Against decks where hard to answer Taunt minions matter less, Demon Control Warlock relies on Rin, the First Disciple to destroy the opponent’s deck.

Check out our List of the Best Standard Decks for Hearthstone Ladder

Update: Control Demonlock (March 2018 – Post Nerf)

Very similar to Cubelock but doesn’t run the combo! This more control heavy list has climbed up a bit in the rankings due to the nerfs. With no Corridor Creeper in the meta game, early-mid game boards are now much easier to clear, making Defile even better card than it already was.

Demon Control Warlock Mulligan Strategy & Guide

Vs Everything

Higher Priority (Keep every time)

  • Kobold Librarian – This card is a Life Tap at half the cost that also gives you a 2/1 body, which is pretty high value. One of the most important aspects of this card is that it activates Lesser Amethyst Spellstone, but it also gives Controlling Warlock decks a 1-health minion to activate Defile.
  • Possessed Lackey – Voidlord is the star of this deck, but he wouldn’t be without his favorite lackey. Since Voidlord is the only Demon in the deck, Possessed Lackey will search him out every time. A turn 5 or 6 Voidlord is probably enough to win you the game against most aggro decks right there, and accelerates your Bloodreaver Gul'dan/N'Zoth, The Corruptor plan against midrange.

Lower Priority (Keep only if certain conditions are met)

  • Lesser Amethyst Spellstone – Keep with Kobold Librarian. After just one upgrade, it’s a great card, but it’s pretty weak at the base.

VS Fast Decks

Higher Priority (Keep every time)

  • Mortal Coil – This card lets you remove a small minion and draw a card, which is pretty valuable early game. It’s also a versatile way to make your Defiles more effective.
  • Defile – One of the best board clear tools in the game, its low cost makes it an extremely safe keep against aggro decks.
  • Doomsayer – Great card versus Aggro. With Patches the Pirate no longer in charrrge, when you drop it on Turn 2, it usually survives (board not big enough, and too early to Silence). Amazing stall move against Aggro.
  • Mistress of Mixtures – Warlocks love healing and Mistress does that pretty well for an early game card. Playing her on your first turn will often mean your first one or two Life Taps won’t cause lasting damage. She also makes Defile easier, as most early game minions right now have 1 or 3 health.
  • Hellfire – As weird as it might seem, Hellfire is a good keep in a lot of the fast matchups. Given how many board refills they have, you want all of the AoEs you can get. Hellfire is especially juicy against Paladin as a counter to their on-curve Call to Arms. Also upgrades your Spellstone.

Lower Priority (Keep only if certain conditions are met)

  • Stonehill Defender – As far as early game Taunts go, Stonehill Defender is actually pretty weak. He’s good in this deck because he can grab Vulgar HomunculusRin, the First Disciple or more Voidlords, but he doesn’t stop early game minions like a Tar Creeper would. If you already have better early game cards he’s an alright keep, but definitely not if you don’t like the rest of your hand.

VS Slow Decks

Higher Priority (Keep every time)

  • Rin, the First Disciple – That this card is not only playable, but even competitive is shocking to me. I thought for certain this was a meme card, but it turns out in control mirrors you often have the time to waste your turn playing seals. The key factor there is that control decks in general are filled with many reactive cards, so often in the mid to late game both players will Hero Power/pass with nothing on the board to respond to. When facing other controlling Warlock decks, the first player to pull this off is the winner in most cases. When played early, it makes every Control matchup much better, because your opponent is not playing against time too.

Lower Priority (Keep only if certain conditions are met)

  • Skulking Geist – Jade Druid has mostly fallen out of favor, but you can still meet him on the ladder sometimes. It’s obviously a great keep against that deck. Other than that, it can win you the game vs Combo Priest (Inner Fire, but it’s really hard to tell which Priest you’re facing during mulligan. Keep it only if you know that you play against one of those decks.
  • Gnomeferatu – The card is there mostly to fatigue your opponent a bit faster, as slow matchups often get that far. Destroying a big threat or a vital board clear can also be good sometimes. That said, it’s best kept against combo decks like Exodia Mage or Exodia Paladin, when destroying that one card can immediately win you the game.

Demon Control Warlock Win Rates

Winrates provided by Metastats

Demon Control Warlock Play Strategy

This deck aims to do one of three different things, depending on the matchup: set up an unbreakable Taunt wall, destroy your opponent’s deck, or sabotage your opponent’s combos.

Vs Aggro

Your main goal of playing vs Aggro is simple – you need to survive. Generally, if you get into the late game while still at a reasonable health total (or with a wall of Taunts against decks without burn), it’s generally a victory for you, as you will slowly outvalue your opponent and he won’t stand a chance while in top deck mode.

But surviving doesn’t come easily when your opponent is pumping more and more minions onto the board. The most important part of your game plan are AoE board clears. Your deck runs plenty of them. Starting with an amazing early game / stall card Doomsayer – you usually want to drop him right on the curve. Your opponent will most likely have a 1-drop, maybe even 2-drop, but most likely not enough force to punch through the Doomsayer. If that’s the case, Doomsayer will not only clear their early board, but also stall the game for one more turn – they can’t develop anything when Doomsayer is going to blow up, so you start with an empty board and basically a free turn to your credit. 

Another amazing card is Defile – it’s often more of a math puzzle than a classic card game board clear, as you need to be absolutely sure that there are no gaps in minions’ health – if there is no 3 health minion on the board, then anything 4 and above won’t get cleared. Given that Aggro decks play a plethora of different early game minions, against big board, Defile is usually a full clear. And if it’s not, you can always set it up. Your opponent played around it by not putting a 1, 2 or 3 health minion on the board? You can do it yourself thanks to the Kobold Librarian, Mistress of Mixtures or Gnomeferatu. You can also Mortal Coil something first to bring everything into the Defile range. Defile is also a very high tempo clear – since you’re only using 2 mana to do everything, so the best time to use it would be having another play in your hand. For example, if you can Defile the board and then play Doomsayer, you can not only clear everything, but also stall for one more turn to safely drop your Lackey. You can also play Defile and then drop a Stonehill DefenderGnomeferatu or another small minion to get some immediate board presence.

Hellfire and Twisting Nether are more generic AoEs. Hellfire just deals 3 damage to everything, which is often enough to clear the board vs Aggro. So you do that if you can. Twisting Nether isn’t really there for those matchups, as most of the time it simply comes too late, but if you play against a Dude Paladin, who refills the board for 5th time, it might still do some work. [

Another important part of the matches vs Aggro is getting the Voidlords out. Those are your best cards vs Aggro, because unless Silenced, they will often force them to sacrifice a whole board to get through them. The best way to get them is through Possessed Lackey – either drop it on Turn 5, or play it a bit later and activate it immediately. Those ways include Dark Pact on Turn 6 and Defile on Turn 7. Try to not put all your eggs into one basket – don’t drop Lackey against a big board and hope that you will be able to pop it next turn. Silence can completely destroy you. Try to clear the board first and drop Lackey only if you’re sure that you’re safe (or you can no longer clear the board).

After that, all you need to do is survive until Turn 10 and Bloodreaver Gul'danN'Zoth, The Corruptor. This swing is usually too much for an Aggro deck to handle, and they just give up (or drag the game for a few more turns before you in turn kill them). 

Healing is also important – this deck runs quite a lot of it. Between 2x Mistress of Mixtures, 2x Dark Pact, 2x Lesser Amethyst Spellstone (let’s assume that they’re upgraded once) and Siphon Soul, that’s 37 healing in total. Then if we add Bloodreaver Gul'dan to the mix with 5 immediate life gain + 3 more per turn, the numbers are getting pretty crazy. But that’s for a good reason, as surviving is very important, and the deck has quite a lot of self-damage through Hero Power, Librarians and Hellfires (15+ self damage during the whole game isn’t anything unusual). Don’t be afraid to heal up when you think that you will die, even if it’s not optimal. Dropping Mistress + Dark Pact in the mid game when you’re low already can be a winning play, as you get 12 healing for just 2 mana and you can survive for a turn or two longer, in order to get to your Lackeys/Voidlords/finishers in time.

Vs Control

Your game plan vs Control decks is quite different. Surviving is often not enough, because you also need to kill your opponent, or at least outvalue him. Remember that as much as the 3/9 Taunts are usually enough to win against Aggro, they often aren’t as strong in slow matchups. 3 damage per turn isn’t really threatening, while slow decks usually have multiple ways to answer them anyway (Priest can even Shadow Word: Pain it for just 2 mana and then deal with the remaining 1/3’s quite easily).

First of all, mulligan is very important. You can, and should be, much more greedy. Instead of looking for all the board clears, look aggressively for your cycle (Librarians) and Possessed Lackey. You want to get those Voidlords out as soon as possible in order to get a smooth ride through the mid game.  

Games vs Control usually are way, way longer, and less straightforward. Depending on your hand, situation and the matchup, you can either try to rush them, outvalue them or get them to the fatigue. Rushing strategy works if you get some early minion damage, then a quick Voidlord to protect them, then, again, an on-curve Gul’dan or N’Zoth. I suppose that strategy that revolves around 10 mana card is not really “rushing down”, but my point is that after reviving a solid board with one of those, if your opponent has no big AoE to answer, you might be able to put them on 2-3 turns clock. If you’re doing that, do not trade. Your Voidlords should be big enough wall, and clear minions only if you need to (e.g. if they drop a Doomsayer, don’t just starte at it, but save your board). However, mind you that it is rarely your game plan. Your opponent needs to have a really bad draws, and you need to get a big N’Zoth or Gul’dan on the curve.

A slightly more common way to win is through outvaluing your opponent. For this, you need to utilize your big board clears – Twisting Nethers. Your opponent will want to kill you as quickly as possible, because once you get N’Zoth & Gul’dan, the game will be much harder, not to mention that Rin often puts him on the clock. Given that, he will often drop multiple minions onto the board at once, which you can punish by a well-timed Nether. Getting 2 or 3 for 1 with Nether is not uncommon. Given that a lot of the slow decks don’t really run card draw, it’s actually not that uncommon for them to run out of steam after constantly trying to rush you down. 

However, the most common way to win in the slow matchups is probably through fatigue. Well, it might seem weird, because you should be fatiguing much faster than they do, right? Not exactly, thanks to Rin, the First Disciple. Having Rin means that no matter how deep you are into your deck, you can still, most likely, destroy the rest of your opponent’s deck and make him fatigue first. But Rin is not that easy to use. First of all – she’s vulnerable to things like Silence or Mind Control. You don’t want that to happen, so in slow matchups, it’s best to combo her with e.g. Dark Pact, or play her INTO your opponent’s Doomsayer. Yes, you don’t get a 3/6 body that way, but you guarantee that the seals will get into your hand. If you don’t kill her off immediately and she gets Silenced, you can still get her back through N’Zoth, remember that! So, after you already have Seals in your hand, you need to balance carefully between playing them and doing other stuff. Your opponent will play much more aggressively to force you into board clears instead of playing seals, and that’s what you do. Don’t be greedy – if you stare at a huge board, just Nether it instead of playing 2x Seal. The best routine is usually one seal + some other play like Defile, Spellstone, or Hero Power after you’re Gul’dan already. After you get to 5/5, the minions you summon from seals will no longer be a big tempo loss, which is great. However, the main prize comes at the end – Azari is a 10 mana 10/10 that destroys your opponent’s entire deck. With this, your opponent will only be able to work with what they have in their hand, which is obviously great for you – you win most of the games where you Azari.

One important extra note about Rin & her seals is that you want to keep your hand quite empty. Seals replace themselves – so if you have 10 cards in your hand (very common), you can’t just play 2x seal and pass, because you will burn your next card. I mean, you CAN do that if all of the remaining cards in your deck are weak, but if you still have Gul’dan or N’Zoth up there, I wouldn’t take my chances (unless you’re playing last seal to Azari right after on the upcoming turn).

Demon Control Warlock Card Substitutions

The deck runs quite a lot of expensive cards and, sadly, a lot of them simply can’t be replaced.

Let’s start with the Epics:

  • Gnomeferatu can actually get replaced quite easily, as it’s not really important in the deck. I even prefer a version that runs Plated Beetle instead, because the card is just much better vs Aggro and makes your N’Zoth more juicy.
  • Doomsayer is very hard to replace, there is no other card that does the same thing. Plated Beetles are also an option, then you can try out other techs like Acidic Swamp Ooze or Dirty Rat. Alternatively, you can use 2x Mountain Giant, which makes the deck better in slow matchups, but worse against Aggro.
  • Skulking Geist – It’s a tech and can be replaced without really hurting your deck that much. Spellbreaker is a solid replacement.
  • Twisting Nether – Can’t really be replaced, it’s your main late game board clear. You will lose most of the slow matchups without it.
  • Voidlord – Absolutely can’t be replaced, it’s the #1 reason why you run the deck in the first place.

And now onto the Legendaries:

  • Rin, the First Disciple is the only replaceable Legedary in the deck. Some of the builds simply don’t run her. As much as she’s a great help in slow matchups, you can still often get her from Stonehill Defender, and she doesn’t really help vs Aggro. 6 mana 3/6 Taunt is super expensive and you’d rather run Tar Creeper instead. Alternatively, replace her with Spellbreaker.
  • Bloodreaver Gul'danN'Zoth, The Corruptor can’t be replaced. They are absolutely necessary and the reason why the deck has so powerful late game.


A Hearthstone player and writer from Poland, Stonekeep has been in a love-hate relationship with Hearthstone since Closed Beta. He's achieved infinite Arena and multiple top 100 Legend climbs.

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Discuss This Deck
  1. Fistouille
    March 15, 2018 at 3:22 am

    – 1 mortal coil + 1 spellbreaker
    – 1 twisting + 1 ooze

  2. GOw ther
    March 12, 2018 at 9:01 am

    guys i dont have much dust and i want this deck so i will dust many legendaries but is it really worth it ?

    • Random Dude
      March 13, 2018 at 8:15 pm

      I mean it is a really strong deck that probably won’t fall out of the meta for quite a bit…

  3. Chris P Bacon52
    February 24, 2018 at 8:56 pm

    What packs should I be getting if i’m going for cards in this deck?

    • Macaroon
      March 8, 2018 at 11:45 am

      Knights of the frozen throne and kobolds and catacombs make up most of the cards in the deck and you could disenchant for things like stonehill defender, the classic cards and n’zoth (which is rotating out soon so unless you have it or play wild it could be better to wait)

    • Random Dude
      March 13, 2018 at 8:17 pm

      KFT and K&C… However, it honestly doesn’t matter because most of these cards will come from dust. Buy whatever pack you want. Mean Streets has a high legendary drop rate btw.

  4. Ophelia
    February 22, 2018 at 9:03 am

    This deck is amazing, but so frustrating against priest (especially the spitefull one).

  5. FNA7
    February 18, 2018 at 3:06 pm

    This needs an update BAD. A warning to anyone reading, this deck is tier 4 if you copy it exactly as it is.

    • KillerKite
      February 21, 2018 at 11:10 am

      What would you recommend?

      • FNA7
        February 21, 2018 at 1:27 pm

        It got the update and it looks pretty standard now. I’m not in love with skulking geist (Jade Druid is dead), and it should be teched for your local meta before you take it to the ladder; but this list is competitive now. When I commented, it had corridor creepers, bonemares, shadowflame…

        • Watson
          March 17, 2018 at 5:59 pm

          Skulking Geist is also there against Cubelock (Dark Pact) and also Kingsbane Rogue (Deadly Poison, Doomerang.) Jade Druid is also one of this decks worst matchups even if it doesn’t see that much play atm.

  6. Spellsarefunsofun
    February 8, 2018 at 7:00 am

    don’t really wanna craft n’zoth when its rotating out soon, whats a good replacement?

    • Martian
      February 9, 2018 at 10:48 am

      Welp, if you don’t play Wild then not crafting N’zoth is probably a good idea (he’s always going to be strong in Wild though). Cube-lock loses nothing at rotation, better to go that route without N’zoth.

      • drren
        March 13, 2018 at 6:11 am

        i thought cube-lock uses n’zoth??

  7. John
    February 6, 2018 at 5:29 pm

    What do you think about running only 1 possessed lackey? Because if u get 1 voidlord into your hand, than one of your Lackey’s is useless, not mentiong if u get 2 voidlords before possessed lackey, but it happend hardly ever.

    • Martian
      February 7, 2018 at 11:34 am

      Yeah that can be annoying, but the consistency you get from running two is too valuable. Sure you often end up with a dead card, but you draw so much it doesn’t really matter.

  8. Vincent
    January 30, 2018 at 3:51 pm
  9. mislavi
    December 16, 2017 at 11:16 am

    nobody plays dudu so why put skull geist? and for priest his main list is dragon priest for now so dirty rat have no sense too

    • Oliver
      December 28, 2017 at 7:19 am

      On 15 i ran into 80% Dudus…

    • N0s0N
      January 23, 2018 at 2:28 am

      Must agree on dirty rat.. maybe I’m just unlucky.. keep losing because of it all the time pulling the worst out of their hands.. very rare it pulls out something in my favor..

  10. Adrinalin
    December 15, 2017 at 3:37 pm

    My current deck build for control lock. Very similar to this deck but with some significant variations. So far 18-3 on the ladder.

  11. Joe
    December 14, 2017 at 9:49 pm

    How is this at all weak to Spell Hunter? Every single time I’ve played against it, I get wrecked by Voidlord.

    • Martian
      December 14, 2017 at 10:02 pm

      Yeah I’d be surprised to lose that matchup. Maybe people are Tapping too long? Gotta play around Steady Shot/Kill Command.

  12. YasinK
    December 14, 2017 at 4:48 am

    Thanks for this guide since I only play control warlock this season and stuck at rank 15-11. But I got a few questions:

    1. Voidlord (especially pulled from Lackey) into Carnivorous Cube combo? Yay or nay? Or too slow for this deck?
    2. Why Bonemare?

    • YasinK
      December 14, 2017 at 8:12 am

      Voidlord > Cube > Dark Pact = 2 voidlord + 8 health

    • Martian
      December 14, 2017 at 10:04 pm

      Bonemare synergizes with Corridor Creeper in a way that’s too strong to pass up. I think Carnivorous Cube is better in decks that have Doomguard and Skull. It might not be awful, but I doubt it would be optimal.

  13. Arey0u
    December 14, 2017 at 3:25 am

    Why not 1 Dark Pact as a way to get Rin going against decks that probably run silence. Against Priest you can drop the combo turn 7 and start the Chain at turn 8 (hopefully). They don’t really pressure you with board presence and you are free to just cast 1 or even 2 Seals per turn. If you are fast enough and burn a key part of their combo it might be faster and more reliable then the rat.

  14. Arthur
    December 13, 2017 at 9:54 pm

    Any substitution to Nzoth?

    • Martian
      December 13, 2017 at 10:19 pm

      Bloodmage Thalnos or Tainted Zealot

      • leiss
        December 14, 2017 at 6:41 am

        And what is better one’s? Also, second Twisting Nether isn’t that bad in this deck, maybe.

        • Lenig Gerater
          March 13, 2018 at 8:20 pm

          The second Twisting Nether gives you consistent draw. However, being an 8 mana card, chances are you are going to draw it anyways. You really only need one to set up N’Zoth.

  15. NPCFish
    December 13, 2017 at 8:09 pm

    I once played this deck against a dragon raza priest, and it turned out Rin backfired on me as my opponent stole it and played it before I did ;-(

    • Martian
      December 13, 2017 at 8:23 pm

      Feelsbadman 🙁

    • Elzein
      January 5, 2018 at 11:39 am

      Happened once for me too. I could feel my opponent laughing at my disappointment.

  16. AgentMango
    December 13, 2017 at 6:45 pm

    This deck is very good. I don’t know how else to say it.

  17. Martian
    December 13, 2017 at 5:26 pm

    Have you played with Rin against a control deck or against Rin with a control deck?


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