"Thaumaturgy... which giveth certain order to make strange works, of the sense to be perceived and of men greatly to be wondered at." - Mathematicall Praeface to Euclid's Elements (1570), John Dee
Thaumaturgy is the capability of a magician to work miracles. A practitioner of thaumaturgy is a thaumaturge, thaumaturgist or miracle worker.
This is what this mod is all about - drawing magic from physical objects in the form of Essentia and reshaping it to perform miracles.
For Minecraft 1.2.3