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“Covers the area in a deadly toxin, damaging enemy troops and buildings over time. Yet somehow leaves the grass green and healthy. Go figure! Reduced damage to Crown Towers.”

The Poison is an Epic card that is unlocked from the Jungle Arena (Arena 9). It is an area-damage, air-targeting spell with a medium radius and low damage that is dealt every second for 8 seconds. It also decreases movement speed of enemy troops by 15%. It is a deep orange liquid in a thin oblong vial. A Poison card costs 4 Elixir to deploy.


For Battle Decks with this card, click here

  • Unlike the Fireball, the Poison's total damage is capable of fully defeating a Musketeer, Wizard, or an Electro Wizard. The Poison must be placed in such a way that the troop is in its radius for its entire duration while it is walking.
  • Poison can be interchanged for Fireball in a deck if the player wants a higher damage spell that cripples everything in a larger radius. The main disadvantage is that the player will not be able to deal high damage to enemies immediately or push them back.
  • The Poison's long duration allows it to deny swarm cards from being effectively used inside its radius. This can be useful on offense after sending in a troop that only targets buildings or a troop that can only attack 1 unit at a time, as the spell will often force a less practical counter out of the opponent. However, its damage on spawning units is not instantaneous, so swarms that can survive its first tick will still be able to land a hit or two. This is also does not work nearly as well against Barbarians, as their higher health allows them to still do massive damage before having all of their hitpoints stripped away. This is still a positive Elixir trade, however, and in the unlikely outcome that they survive, they will easily be dealt with by the defender’s Crown Towers.
  • It is generally not a good idea to use it on defense due to its slow damage, but in a pinch the 15% slowdown effect can prevent the opponent's push from decimating the Tower. The 15% slow effect does not stack with the slow from the Ice Wizard, Ice Golem, and the Giant Snowball.
  • Poison’s slowing effect stays with troops for a slight amount of time after they leave the spell’s duration. This is best seen when deploying the Poison on top of a fast troop, such as the Lumberjack.
  • Poison is one of the more efficient methods at dealing with buildings that spawn troops, as the spell will not only reduce the building's lifetimer but also damage down the oncoming spawn units like Goblin Hut and Furnace, as well as the Elixir Collector. This works just as well against Witch and Night Witch, limiting their damage output and leaving them at critical health.
  • Poison cannot OHKO Skeletons or Bats 2 Levels above it, so players should make sure their Poison is sufficiently upgraded.
  • Poison is a hard counter against the Clone. The spell's 8 second duration allows it to easily take out any cloned troops and possible death spawns from them, while also dealing damage to the originals. It can also prevent the opponent from using their Clone for the entire 8 second duration, which will allow the player to counter the original troops without having to worry about the clones.
  • Poison can be a consistent counter to the Graveyard, sharing a similar duration while covering most of its radius. However, a few Skeletons will still manage to damage the Crown Tower, as the first attack speed of a Skeleton is lower than the time required for the Poison to take effect.
    • You may want to implement cards in your deck that can bait the Poison, like Goblin Hut or Ice Wizard, to prevent them from using Poison on your Graveyard.
    • On the other hand, the Poison works well with the Graveyard. The Poison can deal with enemy counters well, and can counteract enemy placements of Minions or other small troops. However, it is not effective against higher-health troops such as the Valkyrie.
  • Against X-Bow and Mortar setups, Poison can be used to weaken the building and any extra defenders that the opponent might place. While it does not deal a lot of damage to threaten the building itself, swarm defenders will be defeated quickly, and it can also discourage the opponent from sending additional defenders to the building. Alternatively, the player can deploy the Poison further back, in between the building and the Crown Tower if they want to prioritize damage dealt to the Crown Tower.
  • Poison pairs well with the Miner. As its ability to deny swarms for a lengthy amount of time can allow the Miner to deal considerable chip damage uninterrupted. However, this combo is fairly ineffective against cheap tanks like the Knight. Despite this, the mere threat of a Poison spell along with the ambiguity of the Miner's placement will often force the defender to commit a single tank to one spot, rather than them using a swarm to cover multiple placements. If they guess incorrectly, the Miner will still deal some chip damage while not leaving the attacker at a large Elixir deficit.
    • Make sure that the Poison is deployed at the exact same time that the Miner resurfaces. Otherwise, the opponent might have an idea of where you placed the Miner and react accordingly. Alternatively, you can place the Miner and the Poison on different tiles to foul the enemy into thinking that the Miner is placed on the same tile.
    • When attacking a passive building with a Miner, it may be a good idea to feign the attack on the building (i.e. aiming for the Crown Tower instead) in order to make the opponent waste Elixir, which can allowing for Poison to deal damage on their unit, the Crown Tower, and the building. This tactic also works against ranged support cards like the Princess and Magic Archer.
  • Poison is better suited for decks where you can expect your opponent to place defending troops close to their Tower, and that those units will stay there for extended periods of time, allowing the Poison's full damage to take effect. For example, against slow moving tanks like P.E.K.K.A or Golem, ranged troops will often stay in place for a prolonged period of time due to the tank's high hitpoints.
  • Sometimes, it is a good idea to combine the Poison with other spells, particularly spells that can keep enemy troops inside its radius for a longer duration, like Zap, The Log and Tornado. These spells will allow Poison to deal more damage, as the added effects will keep them inside it for longer. It can also weaken troops enough to finish certain troops that can survive a lone Poison, such as a Witch.
    • If the player uses a Poison next to the Crown Tower and manages to hit a troop that survives it, it is better to wait until the enemy troop reaches the bridge and use Zap there, in hopes of hitting other troops that are used as a meatshield for the injured troop. This should not be done however if the troop has already crossed the bridge, as it would be more Elixir-efficient to let the tower finish it off.
    • Mini tanks like the Ice Golem can also be used in a similar way to keep troops distracted long enough for the Poison to deal its full damage, and weakening them enough that they will not be able to pose much threat for a counterattack. This is best utilized against troops that could otherwise survive the spell, such as a Cannon Cart.
  • If the player can afford to activate their opponent's King's Tower (for example, if they are playing a siege deck, wherein the main offense does not cross the river), a quick Poison to any Three Musketeers planted in the back can give them a huge 5 Elixir advantage, provided they react quickly enough.
  • Because every troop moves faster in Rage mode, Poison may not be able to deal all of its damage in time before the troops move out of its radius. As a result, it would be best not to use the spell in this mode.


4 3.5 8 sec -15% Air & Ground Spell Epic
Damage per second
Crown Tower Damage
Tower Damage
6 57 x8 (456) 15 x8 (120)
7 62 x8 (496) 16 x8 (128)
8 68 x8 (544) 17 x8 (136)
9 75 x8 (600) 19 x8 (152)
10 83 x8 (664) 21 x8 (168)
11 91 x8 (728) 23 x8 (184)
12 100 x8 (800) 25 x8 (200)
13 110 x8 (880) 28 x8 (224)
14 120 x8 (960) 30 x8 (240)
15 132 x8 (1,056) 33 x8 (264)

Card Mastery

Type Level/Tier Objective Reward
Damage Dealer
Damage Dealer
1 Deal a total of 50,000 Damage to enemy Troops or buildings 20 Poison cards
75 XP
2 Deal a total of 155,000 Damage to enemy Troops or buildings 6,000 Gold
75 XP
3 Deal a total of 255,000 Damage to enemy Troops or buildings 150 Gem
75 XP
Troop Destroyer
Troop Destroyer
1 Destroy 350 enemy troops 9,000 Gold
125 XP
2 Destroy 1,000 enemy troops 20 Epic Wild Card
125 XP
3 Destroy 1,750 enemy troops 15,000 Gold
125 XP



  • The Poison card was added to the game on 29/2/2016, in the March 2016 Update.
  • On 23/3/2016, a Balance Update, increased the Poison's damage by 5%.
  • On 3/5/2016, the May 2016 Update, changed the description of the Poison. The description prior to this update was "Covers the target area in a sticky toxin, damaging and slowing down troops and buildings. Remember: solvent abuse can kill!"
  • On 4/7/2016, the Tournaments Update, allowed the Elixir Collector to be affected by the Poison's slowing.
  • On 20/10/2016, a Balance Update, removed the Poison's slowing capabilities. This also changed the description. It was used to say: "Covers the target area in a sticky toxin, damaging and slowing down enemy troops and buildings. Yet somehow leaves the grass green and healthy. Go figure!"
  • On 30/11/2016, a Balance Update, increased the Poison's damage by 10%.



  • On 25/4/2018, the Clan Wars Update, allowed the Poison to be placed on the river.
  • On 5/9/2018, the September 2018 Update, changed it so that Epic cards start at Level 6 and end at Level 13 (from 1 to 8).
  • On 1/10/2018, a Balance Update, fixed a bug where troops that were spawned after their parent troops died would be immune to spell damage.


  • On 4/8/2020, a Balance Update, decreased the Poison’s Crown Tower damage to 30% of the full damage (from 35%).


  • On 7/6/2021, the Summer 2021 Update, moved the Arena to unlock the Poison from Spell Valley to Jungle Arena. It also slightly changed the Poison's description, adding the phrase "Reduced damage to Crown Towers." to it.
  • On 6/9/2021, the 2021 Quarter 3 Update, allowed the Poison to slow enemies' speed by 15%.
  • On 27/10/2021, the Champions Update, increased the Level cap of all cards to 14 (from 13).



  • On 14/5/2024, a Balance Update, decreased the Poison’s Crown Tower damage to 25% of the full damage (from 30%).



  • The Poison resembles the real life chemical Bromine (Br), a halogen that, at room temperature, is a rapidly evaporating red-orange liquid just like the Poison.
  • The Poison is 1 of 7 spells which first existed in Clash of Clans, the others being Earthquake, Heal, Lightning, Freeze, Rage, and Clone.
    • In Clash of Clans, the container for Poison resemble spells that take up 1 housing space, which is similar to its Clash Royale counterpart.
    • Unlike its Clash of Clans counterpart, Poison in Clash Royale does affect buildings, has no damage-scaling effects and does not affect the opposing troops' attack speed.
    • In Clash Royale, the liquid of Poison is colored red whereas in Clash of Clans, the liquid is colored orange.
  • The Poison is the first spell to be added to the game after Clash Royale's release.
  • In the Korean, Chinese, and Thai language settings of the game, the Poison's name translates to "Poison Magic", "Damage Potion Spell", and "Venom" respectively.
  • The Poison is 1 of 7 spells which have team-colored rings on their radius, the others are Earthquake, Freeze, Rage, Clone, Tornado, and Graveyard.
  • It is 1 of 12 cards that is unavailable in Chess Royale, the others being Royal Recruits, Rocket, Earthquake, Lightning, Goblin Drill, Miner, Golden Knight, Skeleton King, Archer Queen, Mighty Miner, and the Monk.
  • While not available as a spell, the Poison's sounds are featured in the Clash of Clans Theme song in Beatstar.
  • Due to censorship laws, in the Chinese version of the game, the Poison is recolored green, though the background remains unchanged.
  • The Poison was featured in the winning deck of the Crown Championship Global Series Tournament, by a player called Sergioramos:).
  • On 6/6/2023, the Poison was supposed to receive a Crown Tower Damage decrease to 25% (from 30%), but this change was pulled back last minute.
  • Before the Poison's card release, the Poison's damage was decreased by 11%.