Heaven-sent (12)
I believe the answer is:
providential
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">heaven-sent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for providential that I've seen before include "Very opportune" , "Unexpectedly fortunate (as if arranged by God)" , "Lucky" .)