I am writer of such verse? (6)
I believe the answer is:
iambic
'of such verse?' is the definition.
(iambic verse is a type of poetry)
'i am writer' is the wordplay.
'writer' becomes 'bic' (Bic is a manufacturer of pen).
'i'+'am'+'bic'='IAMBIC'
(Other definitions for iambic that I've seen before include "Type of verse" , "Line of poetry with unstressed-stressed syllables" , "In ti-tum rhythm" , "Kind of verse form with lines of five feet, each with two syllables" , "description of some verse" .)