Witchwater (Ex Nihilo Adscensio)

Witchwater is a fluid added by Ex Nihilo Creatio and Ex Nihilo Adscensio. It is used to transform mobs into more hostile versions of themselves.

Recipe
Witchwater is made by placing Water inside of a Wooden Barrel or Stone Barrel near Mycelium. The allowed area for Mycelium is a 5-block radius from the barrel; Mycelium can either be just below or on the same level as the barrel. The Water transforms at a base rate of 10 minutes for one block of Mycelium. The maximum filled area of 49 Mycelium blocks (excluding the barrel itself) will transform Water in approximately 12 seconds.

Uses
Using a Creepy Doll on a barrel of Witchwater and waiting will spawn an Enderman.

Most mobs will be transformed after touching Witchwater:

Any animal from any mod (or vanilla Minecraft) that comes into contact with Witchwater is affected as if it were struck by lightning, such as Pigs transforming into Zombie Pigmen.