Passes on skills to mischief-maker (7)
I believe the answer is:
imparts
'passes on' is the definition.
('impart' can be a synonym of 'pass on')
'skills to mischief-maker' is the wordplay.
'skills' becomes 'arts' (I've seen this before).
'to' means one lot of letters go next to another (I've seen this in other clues).
'mischief maker' becomes 'imp' (I've seen this in other clues).
'arts' put after 'imp' is 'IMPARTS'.
(Other definitions for imparts that I've seen before include "Transmits, knowledge perhaps" , "Communicates" , "Gives information about armpits" , "Passes on knowledge" , "Bestows" .)