Purified World

It is immediately apparent that …, an ancient Irassian colony, has been the victim of extensive orbital bombardment. Large craters are still visible from space where the …'s major population centers used to be roughly 1.2 million years ago. The handful of survivors from the initial bombardment appear to have succumbed shortly afterwards to the Javorian Pox that was then ravaging most Irassian worlds.

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

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

• Remarkable.
  • Start special project: Bombarded Colony