Enigma resolved with elder's magical skill (11)
I believe the answer is:
legerdemain
'magical skill' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'enigma resolved with elder's' is the wordplay.
'resolved with' indicates anagramming the letters.
'enigma' anagrammed with 'elder' gives 'LEGERDEMAIN'.
Can you help me to learn more?
(Other definitions for legerdemain that I've seen before include "Conjuring skill" , "Find the lady will require this skill" , "sleight-of-hand" , "Magician's skill" , "Deception, trickery" .)