Fantastic magazine distributed without energy (7)
I believe the answer is:
amazing
'fantastic' is the definition.
(I've seen this before)
'magazine distributed without energy' is the wordplay.
I cannot really see how this works, but
'energy' could be 'zing' (I've seen this before) and 'zing' is present in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for amazing that I've seen before include "Stunning, surprising" , "Gobsmackingly great!" , "Fantastic" , "Astonishing, wonderful" , "Very impressive" .)