Unusual Fluctuations

Our Skywatchers have reported an alarming development. Subtle but unmistakable fluctuations were recently detected within the portal in …. In the past, similar disturbances have heralded waves of hostile biological vessels. If these readings hold true, we can expect the next assault within a matter of months. The survival of our people may once again depend on the resolve of our defenders.

The command below will trigger the "Unusual Fluctuations" event in Stellaris:

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

• Disturbing.

Stellaris events fire in chains — one event leads to the next. Here is how Unusual Fluctuations (bio.2005) connects.