As the title says.
If you don’t know the discworld books by Pratchett, Granny Weatherwax it the most formidable character. She is a witch, but doesn’t generally use magic to solve problems; preferring to use persuasion and manipulation. In saying that her magic is extremely powerful.
Maybe a bard with huge wisdom, persuasion and intimidation.
As the level of bastard in the sapient pearwood increases, the number of problems it can’t fix approaches zero
And we all know the Luggage is a complete bastard