Spirit

The Spirit is a neutral creature from the Witchery mod. This creature is found naturally spawned in the Spirit World dimension. It has 4 health, or 2 hearts of health points, and when slain, will drop a Subdued Spirit. Subdued Spirits can be taken back to the Overworld, and are used to spawn Spirits, like a Spawn egg. Sprits are used in conjuration and fetish magic. Naturally spawned Spirits will despawn if the player moves far enough away, but Spirits spawned with a Subdued Spirit will not, as of Witchery 0.18.0.

As of version 0.24.0, the Spirit's spawn rate can be increased with a config option.