Ordered to include legendary bird in rich fabric (7)
I believe the answer is:
brocade
'rich fabric' is the definition.
(I've seen this before)
'ordered to include legendary bird' is the wordplay.
'ordered' becomes 'bade' (I've seen this before).
'to include' means one lot of letters goes inside another.
'legendary bird' becomes 'roc' (I've seen this before).
'bade' going around 'roc' is 'BROCADE'.
'in' is the link.
(Other definitions for brocade that I've seen before include "dress fabric" , "Rich woven fabric" , "Raised woven design with gold or silver threads" , "Rich silk fabric" , "Rich material" .)