User blog comment:Nemesis-041/Anybody have ideas for new plants or zombies?/@comment-4035499-20110601162210

Doom cannon. Place a Doom-shroom on a Cob cannon. Destroys all zombies on screen. cost : 100+100+500+125=825. It's Doom-shroom's brother as well as Cob Cannon's. Everybody knows - Doom cannon is a goth.