Crows startled by Survivors within 20/28/36 meters alert you with a Loud Noise Notification.
Spies from the Shadows has a cool-down of 5 seconds between alerts.

Once the Exit Gates are powered, if there is still a Dull Totem remaining on the Map, Hex: No One Escapes Death activates and lights it:

Increases your Movement speed by 2/3/4 percent.
Survivors suffer from a permanent Exposed Status Effect.
Hex: No One Escapes Death remains inactive if no Dull Totems are available.

Once the Status Effect is revealed to Survivors, Hex: No One Escapes Death reveals the Aura of its Hex Totem to all Survivors within 4 meters and gradually expands that range to 24 meters over the course of 30 seconds.

The Hex effects persist until its Hex Totem is cleansed.

Your base Terror Radius is increased by 8 meters.

Whenever you are outside of a Chase, your Terror Radius is reduced by 16 metres while your Field of View is increased by 3/5/10 °.
Field of View gains do not stack.

Each time a generator is repaired, all windows and vault locations within 32 meters of it are blocked for all Survivors for the next 30 seconds.