Add 'mist, fog' before the wildcards.

Place this in the following folder:

ComfyUI/custom_nodes/comfyui-impact-pack/wildcards

Using low lighting LoRAs or my Fatal Frame background LoRAs is recommended.

Recommended LoRAs:

Fatal Frame background: https://civarchive.com/models/2766404/fatal-frame-background?modelVersionId=3113942

Low Lighting: https://civarchive.com/models/1852386/in-the-dark-low-light-style-killedmyself?modelVersionId=2096323