The Defense Prep Bloon is an Advanced Blooncard in Bloons Card Storm, introduced in version 5.0. It starts with 15 Armor, and at the end of the player's turn it will reload a random friendly Monkey if they have 0 Gold. This On Turn End effect always occurs after Mortars.
Defense Prep Bloon rewards players that spend exactly all their Gold in a single turn. Note that most Monkeys, except Defenders, will not be able to use their Ammo until the player's next turn begins.
The Bloon itself is less of a threat if Armor Piercing is available, but it's difficult to destroy with only low-damage Monkeys.
Booster Bloon helps the Defense Prep Bloon last longer, both increasing delay and improving HP.
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