Witchwater (Ex Nihilo Creatio)

Witchwater is a fluid added by. It is used to transform mobs into more hostile versions of themselves.

Recipe
Witchwater is made by placing inside of a  or  near. 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.

Dolls
Using a on a barrel of Witchwater and waiting will spawn an.

Entities
Most entities will be transformed after touching Witchwater:

The player has potion effects applied when coming into contact with Witchwater. These effects include (hover for details):

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.

Since version 0.4, Witchwater coming in contact with cold fluids (e.g. water) will produce dirt varieties, while coming in contact with hot fluids (e.g. lava) produces stone varieties. These interactions are configurable.