Shredders are a goblin unit which harvests trees at an extremely fast pace. While they cost a few hundred gold, within minutes they can bring in potentially thousands of units of wood from forests.
Each trip takes approximately 200 wood from the forests back to the building which the wood is being collected at. A large number of shredders could potentially level a forested area in only a few minutes. They are also somewhat capable of defending themselves by should always, like other units, have some level of military protection.
They cannot attack aerial units.
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