Mythical creature as content of rag mag? (7)

I believe the answer is:

unicorn

(Other definitions for unicorn that I've seen before include "Fabulous animal like horse with horn" , "Mythical white animal with long horn" , "Fabulous one-horned animal" , "Imaginary, horned horse-like creature" , "Mythical white equine" .)

I've seen this clue in The Sun.

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