Comic realm made mock of in TV ad (10)

I believe the answer is:

commercial

I'm a little stuck... Click here to teach me more about this clue!

'tv ad' is the definition.
(I've seen this before)

'comic realm made' is the wordplay.
'made' indicates an anagram.
'comic'+'realm'='comicrealm'
'comicrealm' is an anagram of 'COMMERCIAL'.

'mock of in' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for commercial that I've seen before include "plug" , "Advertisement" , "TV ad" , "Greek island" , "having profit as the main aim" .)

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

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