A Killer Idea maybe...

The Occultist

Height: Tall

Speed: 4.6

Terror Radius: 24 meters

Power: Tendrils of Darkness

Hold the power button to place a Tendril Trap. Traps can be placed on walls, ceilings, and floors. When a survivor goes near a trap a tendril will emerge and grab them. Killer receives a notification when a survivor is trapped. Escaping the trap inflicts the Exhausted effect for 30 seconds. Traps next to pallets will hold a pallet when a survivor approaches it while in chase. Pallets being held by a tendril require 4 seconds to drop. Traps placed near vault locations will push survivors away while in chase. Maximum 8 Tendril Traps allowed on the map.

Perks:

Hex: Darkest Descent

Every 80/70/60 seconds the map grows darker and the fog thickens. Survivors are afflicted by Blindness. Killers FOV is increased by 15 degrees, and they can see the auras of all survivors. Effect lasts for 30/45/60 seconds.

Dread Visage: Survivors that look directly at you will scream and have their aura revealed for 3/4/5 seconds. Cooldown of 60/45/30 seconds

Pestilence: When a survivor is injured and not in chase they'll be swarmed by flies. Flies create a loud buzzing noise that can be heard from up to 8 meters away and reduce healing and repair speeds by 10/15/20%

I haven't come up with too many add-ons but I have some.

Common Add-On: Boneless Limbs: Replace tendril traps with Tendril Grab. Survivors that are grabbed by the Tendril can be slowly pulled in. Survivors that break free are afflicted with the Exhausted effect for 30 seconds (It's similar to Death Slingers power but doesn't damage survivors and doesn't need to be reloaded but there is a brief cooldown)

Rare Add-On: Unblinking Eyes: Replaces Tendril Trap with Sentry. Sentries can only be placed on walls or ceilings. Survivors that pass in front of a Sentry trigger a loud noise notification and reveal the survivor's aura while they are in the Sentry's FOV and for 4 seconds after they leave it.

Iridescent Add-on: Spined Tendril: Tendril Traps will damage healthy survivors for one health state but will not trap them and disappear after they injure someone

For appearance I'm thinking a woman wearing robes made from human skin and a metal helmet with two protruding spikes in front with a human face stretched across it like a mask. For weapon a short sword with the word Salvation inscribed on the blade. The words "Metus Dolor Mors Ac Formidinus" are carved on the front of the cloak and various words like "Die, Suffer, Hell, Burn, and Slaughter" are carved in random places on the back.

Let me know what you guys think.