In your countless years in The Fog, you have seen it all, and when you are focused, you can remember most of it too. Succeeding a Great Skill Check while repairing a Generator reveals the Killers Aura to you for 4/5/6 seconds.

After repairing a Generator for at least 3 seconds, its Aura is highlighted to you in yellow.

The Generator stays highlighted until it is either fully repaired, you start repairing another Generator, or enter a Locker.
Entering a Locker will trigger a Loud Noise Notification for the Killer at the highlighted Generators location.
Red Herring has a cool-down of 60/50/40 seconds.

After repairing Generators for a total of 55/50/45 seconds, Repressed Alliance activates:

Press the Active Ability button to call upon The Entity to block the Generator you are currently repairing for 30 seconds, after which Repressed Alliance deactivates.
The Aura of the blocked Generator is revealed to all Survivors in white.
Repressed Alliance can only be triggered when no other Survivors are repairing your Generator.

Whenever you are in the Injured State, Lucky Break activates:

Suppresses your Pools of Blood and Scratch Marks for a maximum of 40/50/60 seconds, after which Lucky Break deactivates.
Each 1 second spent healing another Survivor recharges Lucky Break by 1 second up to its maximum Effect duration.

Lucky Break also deactivates whenever you are Healthy or in the Dying State.