Shakespeare's "tricksy spirit” (5)
I believe the answer is:
ariel
'shakespeare's tricksy spirit' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ariel that I've seen before include "Would 'e rail against the spirit in The Tempest?" , "Sprite in The Tempest" , "Moulding round top of wall" , "role in Shakespeare" , "29 9 [TEMPEST CHARACTER]" .)