Adroit spirit. Get prepared for the conjurer (15)
I believe the answer is:
prestidigitator
'the conjurer' is the definition.
(synonyms)
'adroit spirit get prepared' is the wordplay.
'prepared' indicates anagramming the letters.
'adroit'+'spirit'+'get'='adroitspiritget'
'adroitspiritget' with letters rearranged gives 'PRESTIDIGITATOR'.
'for' is the link.
(Other definitions for prestidigitator that I've seen before include "Conjuror" , "Entertainer" , "Tricky performer" , "Illusionist" .)