Profaner's sample herb mixture (10)
I believe the answer is:
blasphemer
'profaner's sample herb mixture' is the definition.
I can't tell whether this definition defines the answer.
'sample herb mixture' is the wordplay.
'mixture' is an anagram indicator.
'sample'+'herb'='sampleherb'
'sampleherb' with letters rearranged gives 'BLASPHEMER'.
Can you help me to learn more?
(Other definitions for blasphemer that I've seen before include "A bad sort of speaker" , "One speaking irreverently about sacred things" .)