Orbiter

The Non-Plant
Orbiter is a non-plant that, like Asteroid Launcher, is obtained on Space World.Also, its projectile is space-based. It absorbs 12 nds, and something awesome, but not for the zombies, happens when it dies.

Death Explosion
When dead, Orbiter causes the non-boss (or non-mini-boss) zombie with the highest health to orbit the zombie with the 2nd highest health, and slams into it, killing everybody, including the high-healthed zombies, in a 3x3 area to die.

Projectile
The projectile, called the Moon Pea, orbits a zombie, gaining velocity as it does. More speed=more damage! The more health a zombie has, the more the Moon Pea orbits, and in the end, the more damage it deals.