Electro-shroom

Electro-shroom is a plant in Plants vs. Zombies: Origins. It can shoot out orbs of energy that will ignore all metallic armor (Bucketheads, Football helmets, etc). Each orb does 2 NDS.

Although this is rare, it can sometime attract metallic armor from zombies, similar to its evolution. However, it the armor will then form into a regular orb. This orb, however, deals 3 NDS rather than 2.

Plant Food ability
Creates a giant orb above itself that will start getting larger and larger, collecting all metallic armor and disintegrating it into the orb. The orb will then explode, dealing 50 damage to zombies in a 3x3 area, 15 damage to zombies in a 5x5 area, and 5 damage to any other zombie outside of that radius.

Almanac entry
Electro-shroom was just some mushroom who happened to be nearby a magnet that someone had dropped a few days ago. Then the gas came and he felt like he could alter gravity itself.

Trivia

 * The old version originally had purple caps, but it was changed to red and blue to symbolize magnetism.
 * At the end of Plants vs. Zombies: Origins, it will evolve once again into Wall-nut.