Ability: When played: Destroy a Zombie here with 3 or less.
Set - Rarity: Premium - Super-Rare
A free buffet? How kind! Don't mind if I do!
Chomper is useful for instantly clearing weaker but nonetheless dangerous zombies such as Template:PvZHLink and Team Mascot. However, its low stats make it bad for combat, so boosting tricks are not really recommended. In fact, it is just like Whack-a-Zombie that costs 1 more sun and can actually fight.
However, Chomper's usefulness diminishes quickly in the late-game, when there are many powerful zombies that Chomper cannot handle, like Template:PvZHLink or Knight of the Living Dead (in fact, Chomper cannot even do any damage to Knight of the Living Dead). Therefore, you should play it as soon as you see a weaker threat.
There is no real counter to Chomper's ability aside from having zombies with 4 or more strength. Set up a backup plan in case it destroys one of your key zombies. The good thing, however, is that Chomper is terrible at combat due to its low stats, so after its ability activates, you can destroy it easily.