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Must Pop is a keyword effect in Bloons Card Storm introduced in version 4.0. While any Must Pop Bloons are on the Bloon track, all the opponent's Monkeys that attack manually can only target Bloons with this keyword. This does not apply to effects that require the player to select a target Bloon (e.g. Bloon Master Alchemist or MOAB Dominator), only attacks. Bloons with this keyword have a large bullseye symbol underneath.
