Keyword

A keyword is a term in Bloons Card Storm that describes mechanics of a card, Hero Ability, or Striker's Adventure item. While not explicitly stated in-game, most keywords are either an effect in and of itself or a condition under which an effect triggers. The player can see a card's keywords when viewing a card in the Collection and during a match when the card is highlighted. Each keyword has an icon, which is displayed next to the Monkey or Bloon during a match at all times.

Some cards have keywords written in their card text, but they do not display those keywords' icons or descriptions. Some card descriptions use phrases such as "During your Turn", "During Opponent's Turn", and "When an opponent draws a Card" like keywords, but they are not keywords and have no icons or descriptions.

Effect keywords

Icon	Text	Applies to	Introduced
	Acid Pool Deals 30 damage to any Bloon ending its turn on it. Lasts 2 turns	Bloon spaces	Version 4.2
	Strong Acid Pool Deals 50 damage to any Bloon ending its turn on it. Lasts 2 turns	Bloon spaces	Version 4.2
	Armor Reduce damage received by <amount>	Bloons, Heroes	Version 4.0
	Armor Piercing Targeted damaged Bloon loses all Armor	Monkeys	Version 4.0
	Camo Attackers must target non-Camo Bloons first	Bloons	Version 6.0
	Defender Can defend on opponent's turn, has +<amount> damage on opponent's turn	Monkeys	Full Playable test
	Detect Can target Camo Bloons normally	Monkeys	Version 6.0
	Doomed This Monkey will be removed at the start of its next turn.	Monkeys	Version 3.0
	Double Attack Attacks twice.	Bloons	Full Playable test
	Immobile Cannot increase or decrease delay. Cannot attack	Bloons	Version 4.0
	Must Pop Monkeys must attack this Bloon before others	Bloons	Version 4.0
	On Fire Will take 30 damage at the end of its turn and before attacking	Bloons	Firstlook test
	Pick Look at the next <amount> cards in your deck. Choose one and add it to your hand. Other cards go to the bottom of your deck.	Powers	Launch
	Regrow On Turn Start: Heal <amount>	Bloons	Version 6.0
	Revive When Destroyed, resummon this Bloon with current Delay and without Revive	Bloons	Version 6.0
	Shield Shield will block <amount> incoming damage	Bloons, Heroes	Full Playable test
	Splash Damage Also deals damage to Bloons on either side of the target	Monkeys, Powers	Version 4.0
	Stunned Monkey can't attack or reload until stun wears off. Bloon delay does not reduce at end of turn.	Monkeys, Bloons	Full Playable test
	Temporary Ammo Extra ammo that is removed at the start of the turn	Monkeys	Version 5.0
	Temporary Is removed at end of turn after ammo reaches 0.	Monkeys	Version 4.0
	Triple Attack Attacks three times.	Bloons	Version 4.0
	Undead When Destroyed, does not go to Graveyard	Bloons	Version 6.0

Trigger keywords

On Attack

On Attack is exclusive to Monkeys and triggers whenever it attacks a Bloon. Cards with this keyword in their card text existed since the Firstlook test, though it was not considered a keyword until version 3.1. Template:BCS monkey list by keyword

On Damaged

This article is in need of research. You can help out by editing this article or discussing your findings on the talk page. The editor who added this notice elaborates: Does it trigger if it takes zero damage from having Armor? If an attack deals exactly enough damage to destroy a shield without going over, does that count as "taking zero damage" in the same way as the Buddy Bloon example?

On Damaged is exclusive to Bloons and triggers whenever it takes damage, including from attacks that deal zero damage (e.g., from a Monkey affected by Buddy Bloon). It does not trigger if the Bloon takes damage to its Shield. Template:BCS bloon list by keyword

On Destroyed

On Destroyed is exclusive to Bloons and triggers when it is destroyed, either by being popped or by hitting the opposing Hero. Template:BCS bloon list by keyword

On Leak

On Leak exists for both Bloons and Monkeys. For Bloons, it triggers when the Bloon hits the opposing Hero. For Monkeys, it triggers when their Hero is hit by a Bloon (only triggering once if hit by a Double Attack or Triple Attack Bloon). Template:BCS card list by keyword

On Play

On Play triggers when the card is played. Template:BCS card list by keyword

On Popped

On Popped exists for both Bloons and Monkeys, but the only Monkey that has this keyword, Spike-o-Pult, has "On Pop" in its card text instead of "On Popped". For Bloons, it triggers when the Bloon is destroyed by damage or an effect, but not by hitting the opposing Hero. For Monkeys, it triggers when it pops a Bloon. Template:BCS bloon list by keyword

On Reload

On Reload is exclusive to Monkeys and triggers whenever they reload, including when reloaded by an effect, such as from Quick Reload. Cards with this keyword in their card text existed since the Full Playable test, though it was not considered a keyword until version 3.1. Template:BCS monkey list by keyword

On Replace

On Replace is exclusive to Monkeys and triggers when another Monkey is placed on its space, removing the former in the process. Template:BCS monkey list by keyword

On Turn End

On Turn End triggers at the end of each turn, before Bloons reduce their delay or attack the opposing Hero. Template:BCS card list by keyword

On Turn Start

On Turn Start triggers at the start of each turn, before the player draws their card. Template:BCS card list by keyword

Zero Gold

Zero Gold triggers an additional effect if the player has no Gold at the moment it triggers. Template:BCS card list by keyword

Other keywords

Unique

Unique is exclusive to Ultra Rare cards, and all of them have it. It prevents the player from having more than one copy of the card in their collection. The player can generate temporary copies of Unique cards during a match (such as with Double Trouble), and can have multiple Unique cards in a deck in Striker's Adventure. Its icon does not appear next to Monkeys or Bloons during a match.