As if by magic (3,6)
I believe the answer is:
hey presto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">as if by magic</span>' is the definition.<br/ ><span class="explanation-format__explanation">(magic words)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hey presto that I've seen before include "Conjuror's command or exclamation" , "Conjuror's exclamation at the climax of a trick" , "revealing remark?" , "that's the trick" , "suddenly, as if by magic" .)