Ever-changing special cook prepared to enthral papers (13)
I believe the answer is:
kaleidoscopic
'ever-changing' is the definition.
(thesaurus)
'special cook prepared to enthral papers' is the wordplay.
I cannot really see how this works, but
'special' could be 's' (common abbreviation as in Special Air Service) and 's' is found within the answer.
'cook' could be 'do' (I've seen this in other clues) and 'do' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for kaleidoscopic that I've seen before include "Showing constant change (of colours?)" , "Showing changing colours" , "Multi-coloured" , "constantly changing in form" .)