Bloonsday Device Pro

"Pro Bloonsday Device unlocked! Plasmatic Fusion! Focal doubling at the point of impact leaves a trail of plasma along the strike path, so hot it will continue to damage all bloons until spent or dissipated.

The next Bloonsday Device you place will have this upgrade."

- Official description after unlocking the Bloonsday Device Pro.

 is unlocked after using twenty Bloonsday Devices.

Abilities
This Special Agent Pro leaves a trail of green plasma wherever the ray is moved. Plasma stays on the track until it dissipates or is spent on popping Bloons. The cooldown is still the same.

Trivia

 * The design resembles a Necron Monolith from Warhammer 40K.
 * The normal version is blue, while this version is green.
 * The Bloonsday device pro is the only pro that is needed to be placed only 20 times to be unlocked.
 * This could be because of its high cost.
 * Similar plasma pools appear in BTD6 via the Cross the Streams MK.