One legal action after another is something one should pack in (8)
I believe the answer is:
creation
'one' is the definition.
(thesaurus)
'legal action after another is something one should pack in' is the wordplay.
I cannot quite see how this works, but
'another' could be 're' (I've seen this in other clues) and 're' is located in the answer.
an anagram of 'action' is 'cation' which is located in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for creation that I've seen before include "The bringing into existence of something" , "A thing made or invented" , "Conception" , "Haydn oratorio" , "Dawn of time" .)