Yuht Hatchery World

… was subjected to extensive orbital bombardment at some point in the distant past, during which the biosphere suffered catastrophic damage. The … appears to have been home to a small outpost built by the ancient Yuht, but why that would warrant the devastation of an entire world is a mystery.

The command below will trigger the "Yuht Hatchery World" event in Stellaris:

When this event fires, you can choose between the following option:

• Interesting.
  • Start special project: Hatchery World