Fast and flashy set more madly misguided! (7)

I believe the answer is:

meteors

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

'fast and flashy' is the definition.
I can't judge whether this definition defines the answer.

'set more madly misguided' is the wordplay.
'set more' can be anagrammed to 'METEORS'.
But, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for meteors that I've seen before include "Space fireballs" , "Shooting stars" .)

I've seen this clue in the Evening Standard.

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