Ornamental as you can imagine (5)
I believe the answer is:
fancy
'ornamental' is the definition.
(I've seen this in another clue)
'you can imagine' is the wordplay.
I cannot quite see how this works, but
an anagram of 'can' is 'anc' which is present in the answer.
The remaining letters 'fy' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'as' acts as a link.
Can you help me to learn more?
(Other definitions for fancy that I've seen before include "idea" , "Imagine; expensive" , "An ornamental whim?" , "Have a crush on" , "Imagine; desire" .)