Role one’s playing in “The Card” (9)
I believe the answer is:
character
I believe this clue is a quadruple definition!!
'role' is the first definition.
(I know that role can be written as character)
'one's' is the second definition.
(thesaurus)
'playing' is the third definition.
(character is a kind of playing)
'in the' is a link.
'card' is the fourth definition.
(I've seen this before)
(Other definitions for character that I've seen before include "constitution" , "Nonconformist" , "Make-up" , "Part" , "Someone in play" .)