Came down from heaven and reigned, we're told (6)
I believe the answer is:
rained
'came down' is the definition.
(raining is a kind of coming down)
'from heaven and reigned we're told' is the wordplay.
I cannot really understand how this works, but
'from' could be 'in' (I've seen this in other clues) and 'in' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rained that I've seen before include "showered" , "Poured" , "Precipitated moisture from sky" .)