Sentence:  There were astonishing changes. The small hours found Mr. Maydig and Mr. Fotheringay careering across the chilly market square under the still moon, in a sort of ecstasy of <WSD>thaumaturgy</WSD>, Mr. Maydig all flap and gesture, Mr. Fotheringay short and bristling, and no longer abashed at his greatness 
Meaning of the word marked with <WSD> tags:  The working of miracles.