Has infinite wisdom but makes nothing clear (6)
I believe the answer is:
oracle
'has infinite wisdom' is the definition.
I can't tell whether this definition defines the answer.
'makes nothing clear' is the wordplay.
'makes' is an anagram indicator.
'nothing' becomes 'O' (looks like zero - 0).
'o'+'clear'='oclear'
'oclear' with letters rearranged gives 'ORACLE'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for oracle that I've seen before include "Sybil" , "Medium of divine revelation" , "One successfully worked" , "Expert" , "Medium for prophecy" .)