"Survivors receive a 2/4/6 percent Regression penalty on Failed Skill Checks for Repair and Healing actions.
Hex: Huntress Lullaby grows in power each time you Hook a Survivor, gaining 1 Token, and affecting Repair and Healing Skill Checks:

1 Token: shortens the time between the Warning sound and the Skill check by -14 percent.
2 Tokens: shortens the time between the Warning sound and the Skill check by -28 percent.
3 Tokens: shortens the time between the Warning sound and the Skill check by -42 percent.
4 Tokens: shortens the time between the Warning sound and the Skill check by -56 percent.
5 Tokens: disables the Warning sound.
The Hex effects persist until its Hex Totem is cleansed."

You see the Auras of cleansed Totems.
You can perform a ritual on a cleansed Totem to resurrect it as a Rekindled Totem.
For each Rekindled Totem active at the same time, Hex: Pentimento gains an additional effect:

1 Totem: Decreases all Survivors Repair speed by 20/25/30 percent.
2 Totems: Decreases all Survivors Healing speed by 20/25/30 percent.
3 Totems: Decreases all Survivors Recovery speed from being downed by 20/25/30 percent.
4 Totems: Decreases all Survivors Exit Gate Opening speed by 20/25/30 percent.
5 Totems: All Totems are permanently blocked by The Entity.
When a Rekindled Totem is cleansed, its remains are consumed by The Entity and it cannot be rekindled.

After hooking a Survivor, Pop Goes the Weasel activates for the next 35/40/45 seconds:

Performing the Damage Generator Action on a Generator instantly regresses it by -20 percent of its current Progression, after which normal Regression applies.

Each time a Survivor is hooked for the first time, you gain a token.  Upon reaching 4 tokens Grim Embrace activates.

The Entity blocks all generators for 40 seconds.  The Obsessions aura is revealed to you for 5 seconds.

The Auras of Survivors, who are healing or being healed, are revealed to you when they are within a range of 20/24/28 meters.

Putting a Survivor into the Dying State with your Basic Attack blocks their Aura from being revealed to any Survivor, who is farther than 32/24/16 metres away from them.

For the next 15 seconds, the following effects apply to the dying Survivor:

Reduces their Field of View and causes them to be deafened.
Suffers from the Blindness Status Effect.
Reduces the Crawling speed by -50 percent.
Reduces the Recovery speed by -25 percent.