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“The Furnace spawns one Fire Spirit at a time. It also makes great brick-oven pancakes.”

The Furnace is a Rare card that is unlocked from the Hog Mountain (Arena 10). It spawns a building with moderate hitpoints. Every 5 seconds, the Furnace will passively summon a Fire Spirit. When defeated, it will also spawn 1 Fire Spirit. It appears to be a cast-iron steam train furnace with a bubbling cauldron holding magenta fluid resembling Elixir on top of it. It is also covered with various other props, including a ladder on the side of it, and a pile of firewood on the other. A Furnace card costs 4 Elixir to deploy.

Strategy[]

For Battle Decks with this card, click here

  • Mirroring it can spawn two Fire Spirits at a time, which provides fast and heavy area damage support for tanks. However, Fire Spirits themselves are weak to area damage cards like spells, and placing the second Furnace close to the first can allow the opponent to get a large positive Elixir trade by targeting both buildings at once with spell cards.
    • To combat this, place one Furnace at the back and another at the center of the map staggered slightly to the side. Unless the opponent mirrors an Earthquake, both buildings would be able to deal considerable chip damage.
    • Alternatively, the player can place the mirrored Furnace in the other lane. This will allow to pressure both lanes as well as discourage the opponent from attacking either lane due to the Fire Spirits' defensive presence.
  • The Furnace can act as a useful defense as well as a support building, thanks to its Fire Spirits which deal area damage.
  • The Furnace is effective at preventing other spawners from building momentum due to the fact that the Fire Spirits spawned deal splash damage and can take out spawners easily.
  • The Furnace is good at supporting counterattacks as it takes out many small troops, such as Minions, Spear Goblins, and Goblins, that opponents may play due to being low on Elixir from their attack. By placing it in advance, the player will not have to worry about cards like Minions, as the spawned Fire Spirits will take care of them.
  • If no other options are available, a Furnace can stop a push with low-hitpoint troops since it will immediately spawn at least one Fire Spirit, wiping out a lot of the push and acting as a distraction.
  • Keep in mind that the spawned Fire Spirit will be able to attack the Crown Tower. Due to the Furnace's 28-second lifetime, this will deal valuable chip damage to a Tower.
  • The Furnace can spawn up to 7 Fire Spirits (value of 7 Elixir), creating a maximum profit of 3 Elixir. However, since the Fire Spirits are instantly killed when they attack, they can be easily absorbed by high-hitpoint troops, such as an Ice Golem. It is advised to defeat those troops so that the Fire Spirits can continue on their way to the Crown Towers without getting distracted.
  • Mini P.E.K.K.A. is a great pair with the Furnace's Fire Spirits, as the Fire Spirits take out any Goblins, or swarm card (excluding Skeleton Army), allowing the Mini P.E.K.K.A to head to the Tower quickly. However, this strategy is vulnerable to heavy tanks, such as a P.E.K.K.A.
  • Poison and Earthquake are powerful counters to the Furnace, as they will not only damage the spawner but also hit the Fire Spirits, as well as possibly hitting other units. However, the player can take advantage of the absence of those spells and deploy other cards that are vulnerable to those spells, such as a Graveyard. Alternatively, those other cards could be used to bait those spells, so that the Furnace can be used unharmed.
  • Since the Fire Spirits spawned from the Furnace explode on impact, Skeletons from the Tombstone can distract Fire Spirits easily and stop almost all the waves of Fire Spirits.
  • The Furnace is a great support card if placed behind a tank, eliminating nearly any type of cheap card that the enemy will place down to counter it. For example, a great combo is Hog Rider or Royal Giant with a Furnace. If the opponent spawns cards such as Minions or Goblins to either distract or destroy, the Fire Spirits will take them out, and if left unchecked behind a tank can decimate the Tower with their powerful splash.
  • A Princess can take out the Furnace without any support if she is left alone.
  • The Furnace is affected by Rage, technically allowing it to produce extra waves. However, its lifetime decays more quickly under a Rage spell's effect, resulting in only 1 extra wave will be produced with the help of Rage. This is a 2 Elixir investment for an equivalent return value of 1 Elixir, and thus is an ineffective strategy to use.
  • In the Rage Challenge, all buildings' (including the Furnace's) lifetimes are unaffected, but in Furnace's case, the Troop producing speed is, allowing it to produce up to 8 waves of Fire Spirits instead of the usual 6 in the challenge.

Statistics

Furnace Attributes

Cost
Elixir
Spawn Speed
Time
Deploy Time
Deploy Time
Lifetime
Time
Type
Type
Rarity
Rarity
4 5 sec 1 sec 28 sec Building Rare

Fire Spirit Attributes

Speed
Speed
Range
Range
Target
Targets
Transport
Transport
Very Fast (120) 2 Air & Ground Ground

Card Statistics

Level
Level
Furnace Hitpoints
Hitpoint
Furnace Hitpoints lost per second
Time
Fire Spirit Hitpoints
Hitpoint
Fire Spirit Area Damage
Area Damage
3 400 14.2 108 98
4 440 15.7 119 107
5 484 17.2 131 118
6 532 19 144 129
7 584 20.8 158 142
8 640 22.8 173 156
9 704 25.1 190 171
10 772 27.5 209 188
11 848 30.2 230 207
12 932 33.2 252 227
13 1,024 36.5 278 250
14 1,124 40.1 305 274
15 1,236 44.1 334 301

Card Mastery

Type Level/Tier Objective Reward
Spawner
Spawner
1 Spawn a total of 660 Troops 100 Furnace cards
50 XP
2 Spawn a total of 1,950 Troops 4,000 Gold
50 XP
3 Spawn a total of 3,250 Troops 150 Gem
50 XP
Damage Dealer
Damage Dealer
1 Deal a total of 240,000 Damage to enemy Troops or buildings with spawned Fire Spirits 6,000 Gold
125 XP
2 Deal a total of 680,000 Damage to enemy Troops or buildings with spawned Fire Spirits 100 Rare Wild Card
125 XP
3 Deal a total of 1,200,000 Damage to enemy Troops or buildings with spawned Fire Spirits 9,000 Gold
125 XP

History[]

2016

  • The Furnace card was added to the game on 3/5/2016, in the May 2016 Update.
  • On 18/5/2016, a Balance Update, decreased the Furnace's cost to 4 Elixir (from 5 Elixir), its hitpoints by 14%, and its lifetime to 40 seconds (from 50 seconds). In addition, the Fire Spirits' area radius was increased to 1.5 tiles (from 1.2 tiles).
  • On 21/6/2016, a Balance Update, increased the Furnace's lifetime to 50 seconds (from 40 seconds).

2017

  • On 19/4/2017, a Balance Update, decreased the Furnace's hitpoints by 5%.

2018

  • On 2/7/2018, a Balance Update, increased the Fire Spirits' damage by 5%.
  • On 5/9/2018, the September 2018 Update, changed it so that Rare cards start at Level 3 and end at Level 13 (from 1 to 11).

2020

  • On 5/5/2020, a Balance Update, decreased the Furnace's hitpoints by 16%.
  • On 9/9/2020, a Balance Update, increased the Fire Spirits' area radius to 1.7 tiles (from 1.5 tiles).

2021

  • On 7/6/2021, the Summer 2021 Update, decreased the Furnace's spawn time interval to 7 seconds (from 9.9 seconds), number of Fire Spirits spawned each wave to 1 (from 2), and decreased its lifetime to 49 seconds (from 50 seconds). Its description was updated, previously saying: "The“Furnace spawns two Fire Spirits at a time. It also makes great brick-oven pancakes.". In addition, the Fire Spirits' hitpoints were increased by 109%, their damage by 6%, their range to 2.5 tiles (from 2 tiles), and their area radius to 2.5 tiles (from 1.7 tiles). It also moved the Arena to unlock the Furnace from Spell Valley to Hog Mountain.
  • On 6/9/2021, the 2021 Quarter 3 Update, decreased the Fire Spirits' area radius to 2.3 tiles (from 2.5 tiles).
  • On 27/10/2021, the Champions Update, increased the level cap of all cards to 14 (from 13).
  • On 7/12/2021, the 2021 Quarter 4 Update, decreased the hitpoints of the Furnace by 17%, its lifetime to 33 seconds (from 49 seconds), and its spawn time interval to 6 seconds (from 7 seconds), and made the Furnace spawn 1 additional Fire Spirit upon death. It also decreased the range of the Fire Spirits to 2 tiles (from 2.5 tiles).

2022

  • On 2/8/2022, a Balance Update, decreased the Fire Spirit's damage by 9%.

2023

  • On 4/4/2023, a Balance Update, decreased the Furnace's spawn time interval to 5 seconds (from 6 seconds), and its lifetime to 28 seconds (from 33 seconds),
  • On 19/6/2023, the Card Evolution Update, increased the Level cap of all cards to 15 (from 14).

Gallery[]

Trivia[]

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