Depleted Bloontonium Laser

The Depleted Bloontonium Laser is inspired by this by Jragon014 (he's a Minecraft Player/Coder, and scroll down to see his Laser), though its original name is the Vulcaanium Laser. It acts similar to its Minecraft counterpart, attaching a laser beam onto a Bloon, which will damage the Bloon at a rate of 2 layers/HP per 0.5 second. The beam will keep attacking that Bloon until it is completely popped or goes out of range. If a Bloon's outer layer pops but releases 2 or more bloons (e.g. Rainbow - 2 Zebras), the laser will lock onto the children with the highest RBE (Strong Target Priority), the fastest children (First), the slowest children (Last), or a random children (Close).

Stats
The Depleted Bloontonium Laser (DBL) is introduced in BTD 6. It is unlocked at rank 38 and has medium-short range. This tower costs $1800 on Medium mode. It's tier 4 upgrades are Vulcaanium Lasers and Ray of Regeneration. It does not have an ability. It has 45 health and an Absolute Defense of 3.