Nature's pull: possibly nothing better (2,4,5)

I believe the answer is:

ne plus ultra

'nothing better' is the definition.
('ne plus ultra' means the most perfect)

'nature's pull possibly' is the wordplay.
'possibly' is an anagram indicator.
'natures'+'pull'='naturespull'
'naturespull' is an anagram of 'NE PLUS ULTRA'.

(Another definition for ne plus ultra that I've seen is " State of perfection (Latin)".)

I've seen this clue in The Guardian.

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