Time Bomb Bloon

The Time Bomb Bloon enters the screen with a number on it (which can vary depending on the round you're on). As it moves down the path, it counts down until it hits 0, or is destroyed. If the countdown reaches 0, the bloon explodes and destroys any nearby towers (with no effect on bloons). If it is destroyed by your towers, it still blows up, but destroys nearby bloons instead (with no effect on towers). The number of hits it takes to destroy is 10 x the number it was counting down from. The countdown will always end before the bloon can escape (so it will always blow up).