Asgard trickster (4)
I believe the answer is:
loki
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">asgard trickster</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loki that I've seen before include "Norse god of mischief" , "Gossip" .)