Performing the Damage Generator Action on a Generator activates Trail of Torment:

Grants the Undetectable Status Effect until the Generator stops regressing or a Survivor is damaged by any means.
The Aura of the damaged Generator is revealed to all Survivors in yellow.
Trail of Torment has a cool-down of 80/70/60

The Aura of a Survivor entering the Basement when you are at least 32 meters away is revealed to you for 3 seconds.
Territorial Imperative has a cool-down of 30/25/20 seconds.

Whenever a Generator is repaired to 70 percent, you benefit from the following effects:
Triggers a Loud Noise Notification for that Generator, revealing its location.
Grants the Undetectable Status Effect for the next 12/14/16 seconds.
Tinkerer can only trigger once per Generator per Trial.

After a generator is repaired, The Entity blocked the generator with the most progress for 30 seconds.  You see its white aura during this time.