Writer using a selection of nibs enthusiastically (5)
I believe the answer is:
ibsen
'writer' is the definition.
(Ibsen is an example)
'a selection of nibs enthusiastically' is the wordplay.
'a selection of' indicates the answer is hidden within the clue.
'IBSEN' is hidden within 'nibs enthusiastically'.
'using' is the link.
(Other definitions for ibsen that I've seen before include "Norse playwright" , "Norwegian dramatist of 'Hedda Gabler'" , "not one for 'All work and no play ...'" , "foreign author" , "Norwegian dramatist, d. 1906" .)