Revelatory Judge abandoning using humour about artist (8)
I believe the answer is:
oracular
'revelatory judge abandoning' is the definition.
I can't judge whether this definition defines the answer.
'humour about artist' is the wordplay.
'humour' becomes 'ocular' (I can't justify this - if you can you should believe this answer much more).
'about' means one lot of letters goes inside another.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'ocular' placed around 'ra' is 'ORACULAR'.
'using' is the link.
Can you help me to learn more?
(Other definitions for oracular that I've seen before include "To do with advice or prophecy as from ancient Greeks" , "Prophetically ambiguous" , "How like Sibyl" , "like Mrs Malaprop's tongue" , "claiming authority" .)