Diviner benefit announced (7)
I believe the answer is:
prophet
'diviner' is the definition.
(I know that prophet is a type of diviner)
'benefit announced' is the wordplay.
'benefit' becomes 'profit' (synonyms).
'announced' indicates a 'sounds like' (homophone) clue.
'profit' sounds like 'PROPHET'.
(Other definitions for prophet that I've seen before include "One who foretells the future as in the Bible" , "One who anticipates" , "Prognosticator" , "Tipster possibly" , "Moses, for example" .)