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' means one lot of letters go next to another.
'introduction to' suggests taking the first letters.
The initial 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" .)