Channel bringing king into power (6)
I believe the answer is:
stream
'channel' is the definition.
(I've seen this in another clue)
'king into power' is the wordplay.
'king' becomes 'R' (abbreviation for rex, king in Latin).
'into' is an insertion indicator.
'power' becomes 'steam' (I've seen this before).
'r' inserted within 'steam' is 'STREAM'.
'bringing' acts as a link.
(Other definitions for stream that I've seen before include "not taken in mixed-ability group" , "flower" , "Natural body of running water" , "Brook, burn" , "Transmit music or video online" .)