Magic words! (3,6)

I believe the answer is:
hey presto
'magic words' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for hey presto that I've seen before include "that's the trick" , "Conjurer's exclamation" , "Cry from magicians" , "with the wave of a magic wand!" , "Spell words" .)