Picture of one wizard (5)
I believe the answer is:
image
'picture' is the definition.
(synonyms)
'one wizard' is the wordplay.
'one' becomes 'I' (Roman numeral).
'wizard' becomes 'mage' (I've seen this in another clue).
'i'+'mage'='IMAGE'
'of' is the link.
(Other definitions for image that I've seen before include "Public impression" , "Vision" , "Reflection" , "of Kairos with Melchior?" , "Public persona" .)