Triumphant declaration bemused Tory sheep (3,6)
I believe the answer is:
hey presto
'triumphant declaration' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'bemused tory sheep' is the wordplay.
'bemused' indicates an anagram.
'tory'+'sheep'='torysheep'
'torysheep' is an anagram of 'HEY-PRESTO'.
Can you help me to learn more?
(Other definitions for hey presto that I've seen before include "Cry from magicians" , "that's the trick" , "Abracadabra" , "Conjuror's command or exclamation" , "Conjuror's exclamation at the climax of a trick" .)