Endlessly fine talent, novelty (4-4)
I believe the answer is:
'endlessly fine talent novelty' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'endlessly fine talent novelty' is the wordplay.
'endlessly' means to remove the last letter.
'fine' becomes 'nice' (I've seen this in another clue).
'talent novelty' becomes 'knack' (I can't justify this - if you can you should give a lot more credence to this answer).
'nice' with its last letter taken away is 'nic'.
Can you help me to learn more?