Double Trouble is an Exotic Powercard in Bloons Card Storm. It creates a copy of a target Bloon on the player's side. The clone will inherit all properties of the parent (including Health, Delay, Shield, and most status effects), but not "cannot attack" from Bloon Repair Bot, and triggers most On Play effects when it spawns. It will never copy the Health gains that the parent initially received from On Play effects, and does not copy Golden Blimp's Health gains per Gold spent. If the target was played by the player (not from the Storm, or summoned by another Bloon or Powers), it generates Bloontonium equal to its cost.
The card artwork depicts a Rainbow Bloon splitting to create a duplicate of itself due to electrical forces from a laboratory machine.
Double Trouble stands out for OTK strategies, duplicating a 0-delay bloon for further damage. Double Trouble can also be used to duplicate a powerful bloon for extra pressure.
If performing a combo with Double Trouble, duplicate a bloon after buffing it, not before.
Combos with Double Trouble can be expensive. Quincy Action Figure, Amelia's Act of Power, and Obyn Greenfoot offer more leverage to affording one-turn combos costing greater than 20 Gold.
Duplicating a played Bloon (i.e. not from the Storm) generates Bloontonium as if that bloon was played again. This tactic can be used as another source of Bloontonium while applying more pressure to your opponent.
Amelia players can take advantage of this while performing OTKs with their own Double Yellow to afford another Act of Power (e.g. a second Quick Ready).
The Eternal can be copied so that it's harder to single out each copy of it, as well as doubling up the capability of applying constant pressure the longer the game plays.
Certain Bloons with On Play effects that boost their Health (or at least their effective health) can be duplicated to keep getting stronger.
Players can duplicate a Draining Bloon that already has lots of shield in order to build even more shield for every copy.
With an Armor-focused deck, duplicating an Armor Powered Bloon surrounded by friendly Bloons with lots of Armor will keep stacking up HP on its copies.
Soulstealer Bloon is a good candidate, allowing it to steal more Health to boost the copy once more.
This article or section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them. The editor that added this notice elaborates: Double Troubling basic (preferrably Pinks) and advanced bloons, Bloontonium gained from Double Troubling a bloon (with comparison)