Diviner's deck (5)
I believe the answer is:
tarot
'diviner's deck' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tarot that I've seen before include "Playing cards" , "Cards often used in fortune-telling" , "One in special suit" , "one may have been taken from deck" , "Sort of card" .)