Wise men get introduction to conjuring tricks (5)
I believe the answer is:
magic
'tricks' is the definition.
(I've seen this in another clue)
'wise men get introduction to conjuring' is the wordplay.
'wise men' becomes 'magi' (the three wise men from the nativity).
'get' is a charade indicator (letters next to each other).
'introduction to' says to take the initial letters.
The first letter of 'conjuring' is 'c'.
'magi'+'c'='MAGIC'
(Other definitions for magic that I've seen before include "Conjuror's art" , "Tricks" , "Fungus causing trips?" , "Unexpectedly produce" , "Art that supposedly invokes supernatural powers" .)