Keyword

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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 of a card in and of itself or a condition under which an effect of the card triggers. The player can see a card's keywords when viewing a card in the Card Collection and during a match when the card is highlighted. For Monkey and Bloon cards, most keywords display their icons next to them during a match.

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.

List of keywords

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

Icon	Text	Applies to	Introduced	Notes
	On Attack Triggers when this Monkey attacks.	Monkeys	Version 3.1	Some cards had this term in their card text since the Firstlook test, but it was not a keyword until version 3.1.
	On Damaged Triggers on losing health from any source	Bloons	Full Playable test	Does not trigger if the Bloon is hit without losing any health, such as an attack from a Monkey with zero ATK, taking damage to its Shield, or having the damage negated by Armor.
	On Destroyed Triggers when Bloon is Popped (by damage or effect) or when it hits opposing Hero.	Bloons	Full Playable test	Black Bloon had this term in its card text in the Firstlook test, but it was not a keyword until the Full Playable test. It originally only triggered when the Bloon was popped, just like On Popped.
	On Leak Triggers when a Bloon attacks a Hero (after Defenders have acted).	Bloons, Monkeys	Launch	For Bloons, the Bloon with the keyword triggers when it hits the opposing Hero. For Monkeys, all Monkeys with the keyword trigger each time their Hero is hit by any Bloon (only triggering once if hit by a Double Attack or Triple Attack Bloon).
	On Play Triggers when card is played.	Bloons, Monkeys	Full Playable test	With the exception of certain special Power cards like Avalanche and Bomb, all Power cards implicitly apply their effects On Play. Some cards had this term in their card text in the Firstlook test, but it was not a keyword until the Full Playable test.
	On Popped Triggers when Bloon is Popped (by damage or effect). Does not trigger if Bloon hits opposing Hero.	Bloons, Monkeys	Launch	The only Monkey that has this keyword, Spike-o-Pult, has "On Pop" in its card text instead of "On Popped". For Bloons, the Bloon with the keyword triggers when it is destroyed by damage or an effect, but not by hitting the opposing Hero. For Monkeys, the Monkey with the keyword triggers when it pops a Bloon. Golden Bloon had this term in its card text in the Firstlook test, but it was not a keyword until the Full Playable test.
	On Reload Triggers when this Monkey reloads.	Monkeys	Version 3.1	Also triggers when reloaded by an effect, such as from Quick Reload. Some cards had this term in their card text since the Full Playable test, but it was not a keyword until version 3.1.
	On Replace Triggers when this Monkey is replaced by another Monkey	Monkeys	Version 2.0	Does not trigger if transformed into another Monkey (i.e., Total Transformation Monkey).
	On Turn End Triggers once turn has ended	Bloons, Monkeys, Hero Abilities	Full Playable test	Occurs before Bloons reduce their delay or attack the opposing Hero. Blade Maelstrom always triggers after other Monkeys. Lead Coating Bloon always triggers after On Fire. If multiple cards with the same "priority" trigger at the same time, they trigger in the order they were played, oldest first.
	On Turn Start Triggers at start of turn	Bloons, Monkeys	Full Playable test	Occurs before the player draws their card. For Monkeys, this occurs at the same time they perform their reload step. For Bloons, this occurs after Doomed Monkeys disappear. Multiple Bloons with this keyword trigger in their order on the Bloon track.
	Zero Gold Triggers an additional effect if you have 0 Gold	Bloons, Monkeys, Powers	Version 5.0	For Powers, the effect triggers if the player has no Gold remaining after playing the card, before the card effect applies.

Other

Icon	Text	Applies to	Introduced	Notes
	Unique You can only have one copy of this card	All Ultra Rare cards	Full Playable test	The player can still 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.

List of cards with trigger keywords