Cast in a very bad shape (7)

I believe the answer is:

satanic

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'bad shape' is the definition.
'satanic' can be an answer for 'bad' (I've seen this before). I'm unsure of the 'shape' bit.

'cast in a very' is the wordplay.
'cast in a' anagrams to 'SATANIC'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for satanic that I've seen before include "Hellish" , "Fiendish" , "Like the Devil" , "Like hell it is" , "Devilish, like Blake's mills" .)

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

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