After run I try a strange and uncommon thing (6)
I believe the answer is:
rarity
'uncommon thing' is the definition.
(I've seen this before)
'after run i try a strange' is the wordplay.
'after' is a charade indicator (letters next to each other).
'run' becomes 'r' (cricket abbreviation).
'strange' indicates an anagram.
'i'+'try'+'a'='itrya'
'itrya' is an anagram of 'arity'.
'r' next to 'arity' is 'RARITY'.
'and' acts as a link.
(Other definitions for rarity that I've seen before include "Uncommon item or event" , "Unusual item" , "Collector's item" , "Uncommon thing" , "Thinness" .)