Crossword Genius

Lacking consent to value white magic (7,5)

Ross

I believe the answer is:

without leave

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'value white magic' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'lacking consent' is the wordplay.
'lacking' becomes 'without' (I've seen this before).
'consent' becomes 'leave' (I've seen this before).
'without'+'leave'='WITHOUT LEAVE'

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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