Picture again what could be exceptional reward (6)

I believe the answer is:

redraw

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'picture again what could' is the definition.
I can't tell whether this definition defines the answer.

'exceptional reward' is the wordplay.
'exceptional' indicates anagramming the letters (an unusual or exceptional ordering of the letters).
'reward' is an anagram of 'REDRAW'.

'be' is the link.

Can you help me to learn more?

(Other definitions for redraw that I've seen before include "Adjust" , "Sketch again" , "Design again" , "Warder (anag)" , "Delineate again" .)

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

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