The Draining Bloon is an Advanced Blooncard in Bloons Card Storm. When it is played, it removes all Bloontonium from the player's Hero (not the opponent's) and gains 30 Shield per Bloontonium removed. Bloontonium is generated both before and after the shield transfer; by default, this bloon guarantees at least 150 Shield, and the player's hero gains Bloontonium equal to its Gold cost.
If enough Bloontonium is accumulated, the Draining Bloon becomes extremely durable. However, your Hero loses all of their Bloontonium (except 5 Bloontonium), so be sure to have a steady supply of Bloontonium.
The highest Bloontonium heroes belong to Gwendolin and Amelia, at 18; the Draining Bloon can have up to 740 effective health.
Return to Sender on an opponent's Draining Bloon will result in the opponent losing lots of Bloontonium without much benefit, if they used this card when they had lots of Bloontonium.
Advanced
5
Now adds Bloontonium equal with its cost after draining Bloontonium (bug fix)
No longer generates Bloontonium a second time after draining all Bloontonium (bug fix)
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Draining Bloon in-game
Draining Bloon creating Shield from Bloontonium
