Testudo Formation

The Testudo Formation is a History Trick card that can be used either offensively or defensively, as it summons four moderately weak cards to defend lanes and also counterpush, but they can also be used as cannon fodder to block incoming attacks.

With:
This card can provide easy counterpushing and defence, and the zombies have moderate health, 12 in total, counting the armored trait. They can also provide cannon fodder in bothe lanes, allowing you to place other troops down without having to worry about those two lanes.

Against:
The Testudo Formation can be very annoying, as you can't do anything about them the round it's played, but since they have low strength, you can you Whack-a-Zombie to get rid of them. This is however no recommended as you will need 4 of them to get rid of them all, plus it will cost a lot. An easier methed is to use Strikethrough plants. A Power Flower can destroy the lanes in 2 turns, also surviving with one health.

Trivia

 * This is based on an ancient Roman battle strategy