When a Bloon escapes, a Bomb Storm will destroy every Bloon on the screen below a ZOMG.
~ BTD6 description
Bomb Blitz is the final upgrade of Path 3 for the Bomb Shooter. Upon losing a life, after a very brief animation, all bloons on screen below a ZOMG (below a BFB before the 2.0 update, although they could still be popped) will be destroyed and Z.O.M.Gs and B.A.Ds take 2000 damage. This includes Fortified bloons as well. It also fires tertiary cluster bombs every shot instead of every second shot. It costs $29,750 on Easy, $35,000 on Medium, $37,800 on Hard and $42,000 on Impoppable. This upgrade also grants the tower the ability to pop both Black and Zebra Bloons.
Before version 2.0.0, the description was "When a Bloon escapes, a Bomb Storm will destroy every Bloon on the screen below a BFB.", but it has changed to the current description, due a factual correction.
It is one of the only few upgrades capable of instantly popping a Ghost Bloon.
Because of this, it can reach the max pop count (2,147,483,648) by destroying 215 ghost bloons.