Guerrilla, creative type after power (8)
I believe the answer is:
partisan
'guerrilla' is the definition.
(I've seen this before)
'creative type after power' is the wordplay.
'creative type' becomes 'artisan'.
'after' is a charade indicator (letters next to each other).
'power' becomes 'p'.
'artisan' after 'p' is 'PARTISAN'.
(Other definitions for partisan that I've seen before include "Aspirant to be a guerilla" , "Muslim call to prayer" , "Blindly loyal to one side" , "Enthusiast" , "Adherent" .)