You can see the Scratch Marks of other Survivors.
Whenever another Survivor loses a Health State within 32 metres of you, the Killers Aura is revealed to you for 3/4/5 seconds.

When you heal another Survivor for the equivalent of 1 Health State, Renewal activates:
The next time you are unhooked or unhook yourself, you suffer from the Broken Status Effect until Renewal deactivates.
You are automatically healed 1 Health State after 28/24/20 seconds.
While Renewal is active, the following conditions will deactivate it:

Successfully being healed by Renewal.
Being put into the Dying State before the timer elapses.
Renewal does not activate if you already suffer from the Broken Status Effect.

After being unhooked or unhooking yourself, instantly gain 40/45/50 percent to your Healing progress.

Reduces the duration of your Scratch Marks by 3/4/5 seconds.
Your Scratch Marks are spaced inconsistently.

Reduces the volume of Grunts of Pain while in the Injured State by 25/50/75 percent.
Iron Will cannot be used when suffering from Exhaustion, but does not cause the Exhausted Status Effect.

Unlocks potential in your Aura-reading ability:
Paranoia paired with your horror of failure helps prepare you from repeating the same mistakes.

The Auras of the 3 Generators in closest proximity to one another are revealed to you for 30/45/60 seconds at the start of the Trial, and each time a Generator is completed.
Increases your Repair speed on those Generators by +5 percent while active.
If you are holding a Map, all Generators revealed by Déjà Vu are automatically added to it.