Selection of informal prints containing ink MC distributed (4,1,3)
I believe the answer is:
pick n mix
'selection' is the definition.
I know nothing about this answer so I can't tell whether this works.
'informal prints containing ink mc distributed' is the wordplay.
'informal prints' becomes 'pix' (I can't justify this - if you can you should believe this answer much more).
'containing' is an insertion indicator.
'distributed' indicates anagramming the letters.
'ink'+'mc'='inkmc'
'inkmc' with letters rearranged gives 'cknmi'.
'pix' enclosing 'cknmi' is 'PICK-N-MIX'.
'of' is the link.
Can you help me to learn more?
(Another definition for pick n mix that I've seen is " assortment of sweets".)