Please run amok in the land of Nod (6)
I believe the answer is:
asleep
'in the land of nod' is the definition.
(I've seen this in another clue)
'please run amok' is the wordplay.
'run amok' is an anagram indicator.
'please' is an anagram of 'ASLEEP'.
(Other definitions for asleep that I've seen before include "Conked out" , "Dormant, inactive" , "this fast?" , "Out for the count" , "Elapse (anag)" .)