Ban for wielder of a quill? (9)

I believe the answer is:

proscribe

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'ban' is the definition.
(I know that ban is a more specific form of the action criminalise)

'for wielder of a quill?' is the wordplay.
'for' becomes 'pro' (as in being 'pro' something).
'wielder of a quill?' becomes 'scribe' (I can't justify this - if you can you should believe this answer much more).
'pro'+'scribe'='PROSCRIBE'

Can you help me to learn more?

(Other definitions for proscribe that I've seen before include "Exile" , "Prohibit" , "Ban" , "Denounce" , "Forbid; condemn" .)

I've seen this clue in The Times.

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