Based on the literal meaning of the word and its Latin root, I'd say "anointer," but you'd have to explain the intended meaning. There's no equivalent idiom in American English that I know of.
Edited to add a note about the etymology: This word seems to have the Latin word "unguere" as its root, which means "to anoint" in the sense of applying oil (and also in the religious sense of anointment, which generally involves the application of oil). English speakers might recognize "unguent" and "unction" as descendants.
English got "to anoint" from Old French (I think) combining in + unguere, which gives the sense of a lesser application rather than, like, oiling something completely for lubrication.
I was tempted to recommend "unctor," which is a perfectly fine ecclesiastical Latin word that means "anointer" anyway and has a more obvious relationship to "untore," but as a native American English speaker, I don't find it very idiomatic.