Brew of Flowing Spirit

The Brew of Flowing Spirit is a throwable potion from the Witchery mod. When thrown at a block, the potion will spawn a single Flowing Spirit source block, which can then be picked up with a bucket. Standing in the liquid will give the player the Regeneration effect. If a Nightmare steps into Flowing Spirit, it will lose it's invulnerability powers. Demonic/undead monsters will be given the Weakness effect. Having a pool of Flowing Spirit near a Dream Weaver of Nightmares will decrease the chance of a Nightmare occurring by 10% per source block, with a cap of three blocks.

Recipe
This can only be crafted while the player is in the Spirit World dimension.