Roll out mists for immersive rites (8)

I believe the answer is:

baptisms

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'immersive rites' is the definition.
I can't judge whether this defines the answer.

'roll out mists' is the wordplay.
'roll' becomes 'bap' (bap can mean a bread roll).
'out' indicates anagramming the letters.
'mists' is an anagram of 'tisms'.
'bap'+'tisms'='BAPTISMS'

'for' acts as a link.

Can you help me to learn more?

(Another definition for baptisms that I've seen is " religious ceremonies".)

I've seen this clue in the Sydney Morning Herald.

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