Ghost

Ghosts appear in forests at night. A tamed ghost accepts items and uses them for particular jobs: given torches, it places them in dark areas; given a totem of undying, it activates the totem on behalf of its owner; given an enchanted item, it strips one random enchantment and gives the player experience, much like a grindstone does. Seedling ghosts, another type, collect dropped saplings and carry them until they find ground to plant in, and some bury themselves in the soil through the night.

Kodama are forest spirits that trade random saplings for amethyst shards. Among those saplings is one that yields a tree with hollow eye blocks, and a calibrated haunted eye, crafted from haunted planks, redstone and a haunted eye, outputs a signal strength that rises or falls with the distance to the nearest detected entity. The mod runs on Fabric, Forge and NeoForge with files for 1.18.2 – 1.21.1, and the environment is client and server, so the server and every player need it. Ghost is not open source and is released under All rights reserved; its source code and issue tracker are public.