Hypnotic states from which rest can come (7)

I believe the answer is:

trances

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

'hypnotic states' is the definition.
(I've seen this before)

'which rest can come' is the wordplay.
'rest can' can be anagrammed to 'TRANCES'.
But, I'm not clear how the anagram is indicated.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for trances that I've seen before include "what half-conscious people experience?" , "Hypnotic states" , "Recants (anag.)" .)

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

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