Surprisingly I'm seen deserving to be an angel (6,9)

I believe the answer is:

divine messenger

'angel' is the definition.
(divine messenger is a kind of angel)

'surprisingly i'm seen deserving' is the wordplay.
'surprisingly' indicates anagramming the letters.
'im'+'seen'+'deserving'='imseendeserving'
'imseendeserving' is an anagram of 'DIVINE MESSENGER'.

'to be an' acts as a link.

I've seen this clue in The Telegraph.

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