Crossword Genius

The firs chopped? One may get a dramatic change of scenery (7)

Ross

I believe the answer is:

shifter

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'a dramatic change of scenery' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'the firs chopped?' is the wordplay.
'chopped?' indicates anagramming the letters (letters chopped or smashed up).
'the'+'firs'='thefirs'
'thefirs' anagrammed gives 'SHIFTER'.

'one may get' is the link.

Can you help me to learn more?

(Other definitions for shifter that I've seen before include "Mover of scenery" , "One who moves a thing" .)

I've seen this clue in The Guardian.
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