Oracle, note, left ruler distraught (7-6)
I believe the answer is:
fortune-teller
'oracle' is the definition.
(thesaurus)
'note left ruler distraught' is the wordplay.
'distraught' indicates anagramming the letters.
'note'+'left'+'ruler'='noteleftruler'
'noteleftruler' with letters rearranged gives 'FORTUNE-TELLER'.
(Other definitions for fortune-teller that I've seen before include "Foreteller of destinies" , "User of crystal ball" , "one could predict a lot" , "Clairvoyant, future diviner" , "Palm reader" .)