Announces cards Lee shuffled (8)
I believe the answer is:
declares
'announces' is the definition.
('declare' can be a synonym of 'announce')
'cards lee shuffled' is the wordplay.
'shuffled' is an anagram indicator.
'cards'+'lee'='cardslee'
'cardslee' with letters rearranged gives 'DECLARES'.
(Other definitions for declares that I've seen before include "makes confession" , "States emphatically" .)