Flapping Weapons

Exploration Stage: Historical Museum
From: Janko
Description: A number of interesting artifacts have been discovered in recent excavations! We don't know which one is causing the anomaly, but it must be a mechanical device. Let's examine the ones with gears.
Completed: Is it a toy butterfly? Wait, my father once told me about the puppeteer's retaliatory butterfly. He said the defenders used it as a weapon against flying monsters. It would make a great exhibit!