Trickery or chicanery (5-5)
I believe the answer is:
hocus-pocus
I believe this is a double definition.
'trickery' is the first definition.
(I know that trickery can be written as hocus-pocus)
'chicanery' is the second definition.
(thesaurus)
(Other definitions for hocus-pocus that I've seen before include "Mumbo-jumbo" , "Conjurer's incantation" , "Conjuror's incantation" .)