He takes satisfaction in his ability to engrave (7)
I believe the answer is:
avenger
'he takes satisfaction in his ability' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'engrave' is the wordplay.
'engrave' can be anagrammed to 'AVENGER'.
Though, I'm not sure how the anagram is indicated.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for avenger that I've seen before include "one retaliating" , "Fury results" , "One bent on retaliation." , "One exacting retribution" , "He seeks satisfaction or retribution" .)