It's probably not super common, I just like to use it to describe economic upheaval and opportunity.

So there's this giant catfish in Japanese mythology, the Namazu. It's captive in the ocean, under a giant keystone held down by the daimyojin Kashima. When Kashima gets tired or distracted, he lets off pressure a little, the Namazu wriggles around to get free and that wriggling sets off earthquakes and subsequently, tsunamis.

After an earthquake, there's always a rebuilding and a redistribution of wealth. And after the Edo earthquake of 1855, woodcut prints depicting the namazu and society (namazu-e), money falling from the sky, businessmen vomiting and defecating money, etc. got super popular. (https://www.illustrationchronicles.com/When-Giant-Catfish-Sh...)