Neural Symbiosis

Science Officer … is elated to report that … joining with a symbiont from … has been a glowing success. After an initial period of confusion and mild discomfort, … reports notably increased intellectual faculties when it comes to solving complex tasks. Even more remarkably, … is now able to mentally communicate with the slug-like creature freshly attached to … brain stem. The symbionts are hiveminds with lifespans of hundreds of years. They claim their past union with the reptiles on … came to end when their hosts grew unfoundedly suspicious of them. In fits of rage, the reptiles began tearing off their symbionts and clubbing them to death. Dismayed by their hosts' actions, the symbionts that survived retreated away from the reptiles, who without the neural stimulation of their slugs devolved back into non-sapient beasts. The symbionts would like to extend an offer of union to other … in the …. They ask, however, that only the willing become hosts.

The command below will trigger the "Neural Symbiosis" event in Stellaris:

When this event fires, you can choose between these 4 options:

• Then let us open our hearts, and brainstems to them!
• Then let us open our hearts, and brainstems to them!
• Replicate and distribute them to our species.
  Available only if Requires origin: Evolutionary Predators.
  • Every … leader and pop will gain the trait Brain Slug Host.
• This has gone far enough.
  • Deny … citizens knowledge of the brain slugs' offer.

Stellaris events fire in chains — one event leads to the next. Here is how Neural Symbiosis (distar.172) connects.