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Kazakus and custom spell guide

Our Kazakus guide now contains all the possible spell concoctions you can craft.

One of the most exciting Mean Streets of Gadgetzan cards to be revealed at BlizzCon this weekend was Kazakus, a Legendary minion who's exclusive to the Kabal-associated heroes Mage, Priest and Warlock, and adds a very special new effect to Hearthstone.

This new card is a 4 Mana 3/3 that allows the player to create their very own custom spell - something the developers have long wanted to add to the game, but are only now able to do so.

What are custom spells though, how do you create one, and what potential effects can be concocted by fielding Kazakus? We had a rough idea of how things worked just from the Hearthstone keynote, but a subsequent card preview stream from Trump - featuring a surprise Ben Brode cameo - has shed a lot more light on proceedings.

We thought it would be useful to put together a complete custom spell guide based on all of the information that came out of BlizzCon this weekend. This should hopefully get you right up to speed on the workings behind this exciting new mechanic.

In time we'll flesh this out further with loads more info, including the best approach to take when brewing up these powerful potions!

Crafting process

- Playing Kazakus onto the board will commence the crafting process, which is essentially a series of Discoveries.

- First of all you select the cost of your spell at either 1 Mana, 5 Mana or 10 Mana - you'll make this choice based on your deck style, the state of the board and your current curve, of course.

- Once you've selected the base cost of your potion, you can then choose twice between three out of nine possible spell ingredients.

- Each of these ingredients scale up with the Mana cost you've selected.

- There are around 120 different potions you can craft across all possible Mana costs and ingredient permutations. We'll expand on this aspect of the guide once we've seen all of the crafting elements.

- Note that you can create two of these custom spells if Brann Bronzebeard is out on the board!

One Mana

If you choose to create a one Mana cost spell, you'll craft a Lesser Potion.

Shadow OilAdd a random Demon to your hand.
Heart of FireDeal 3 damage.
GoldthornGive your minions +2 Health.
Stonescale OilGain 4 Armor.
KingsbloodDraw 1 card.
Ichor of UndeathSummon 1 friendly minion that died this game.
NetherbloomSummon a 2/2 Demon.
FelbloomDeal 2 damage to all minions.
IcecapFreeze a random enemy minion.

Five Mana

Here are the options for how your five Mana Greater Potion might be blended together.

Shadow OilAdd 2 random Demons to your hand.
Heart of FireDeal 5 damage.
GoldthornGive your minions +4 Health.
Stonescale OilGain 7 Armor.
KingsbloodDraw 2 cards.
Ichor of UndeathSummon 2 friendly minions that died this game.
NetherbloomSummon a 5/5 Demon.
FelbloomDeal 4 damage to all minions.
IcecapFreeze 2 random enemy minions.
Mystic WoolTransform a random enemy minion into a 1/1 Sheep.

Ten Mana

The Superior Potion costs ten Mana and is the strongest potion you can brew. Here are the options you'll choose from.

Shadow OilAdd 3 random Demons to your hand.
Heart of FireDeal 8 damage.
GoldthornGive your minions +6 Health.
Stonescale OilGain 10 Armor.
KingsbloodDraw 3 cards.
Ichor of UndeathSummon 3 friendly minions that died this game.
NetherbloomSummon an 8/8 Demon.
FelbloomDeal 6 damage to all minions.
IcecapFreeze 3 random enemy minions.
Mystic WoolTransform all minions into a 1/1 Sheep.

Custom spell effects

A broad description of the spell ingredients was provided by Ben Brode on a recent stream with Trump, live from the BlizzCon show. We've got the video embedded for you below, and discussion around custom spells begins at pretty much bang on the ten minute mark.

Here are the nine possible effects that can be blended together:

  • Damage to all minions
  • Draw cards
  • Gain X amount of Armor
  • Deal X amount of Damage
  • Resurrect minions
  • Polymorph minions
  • Add a Demon to your hand
  • Summon a Demon
  • Minions gain Health
Watch on YouTube

Keep in mind that you've no way of guaranteeing which of these effects you're going to receive in your first choice of three, or indeed your second. We're looking forward to getting some hands-on experience with this process, so we can see how consistent these effects will be in the live competitive metagame.

One possible effect that was actually cut in development is Thoughtsteal. The reasons for removing it are unknown, but presumably relate to balancing issues.

That's everything we know about custom spells as of today! We'll update this guide as soon as more information about the process - including artwork for the possible potions - becomes available.

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John Bedford avatar

John Bedford


John is Metabomb's Editor in Chief and looks after the day to day running of the site when he's not writing about Hearthstone.