Brainizer Zombie

The Brainizer Zombie is a shield-type zombie that holds a Brainizer.

Brainizer


Brainizer is a special shield, any projectile that passes through it becomes a brain that heals zombies.

Strategy
Use shield-ignoring plants: catapults, fume-shrooms, spikeweeds and instant kills ,because peas, spikes, spores will turn into a brain, when passing through brainizer.

When Brainizer Zombie is about to be killed, he will drop his brainizer staying and direct projectiles will still heal other zombies. So the best choice is an exploding instant kill because it will destroy the brainizer.

Note that zombies' hp can't be higher than its base amount (it is imposible to normal zombie to have 11/10 hp). Headwear zombies, when their armour is destroyed, can't return their headwear, too.