If there is at least one Dull Totem remaining in the Trial Grounds, Hex: Plaything activates on a random Totem each time a Survivor is hooked for the first time:

The hooked Survivor suffers from the Cursed and Oblivious Status Effects until Hex: Plaything is cleansed.
For the first 90 seconds, only the Cursed Survivor is able to cleanse the Hex Totem.
The Aura of Hex: Playthings Hex Totem is revealed to the Cursed Survivor within 24/20/16 meters.
The Hex effects persist until its Hex Totem is cleansed.

Whenever a Generator is repaired to 90 percent, Survivors repairing it are faced with continuous Skill Checks.
If they miss one or stop repairing, the Generator becomes blocked for 16/18/20 seconds.
Merciless Storm can only trigger once per Generator per Trial.

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.

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.

After damaging a generator, its aura is highlighted in yellow.

Whenever a Survivor enters the dying state, every affected generator explodes, losing 10percent worth of progress, and starts to regress.

Any Survivor repairing a generator when it explodes will scream and reveal their aura for 12 seconds.

Eruption has a cooldown of 30 seconds.

At the start of the Trial, 4 random Hooks, as well as the Basement Hooks, are changed into Scourge Hooks:

The Auras of Scourge Hooks are revealed to you in white.
Each time a Survivor is hooked on a Scourge Hook, the following effect applies whenever you are farther than 24 metres from the hooked Survivor:
Accelerates the Sacrifice Process by 10/15/20 percent.