Dramatic wizard beside me, royally rolling in it (10)

I believe the answer is:
prosperous
'dramatic' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for prosperous that I've seen before include "thriving" , "Well-to-do" , "Affluent" , "Doing well" , "Rich" .)
