The character John Constantine from the Hellblazer graphic novels is sometimes referred to as a magus.
John F. Kennedy | Pope John Paul II | Elton John | John | John Lennon | John Wayne | John McCain | John Kerry | John Cage | Olivia Newton-John | John Williams | John Peel | John Adams | John Steinbeck | John Travolta | John Milton | John Zorn | John Marshall | John Howard | John Singer Sargent | John Ruskin | John Updike | John Maynard Keynes | John Coltrane | John Cleese | St. John's | John Waters | John Lee Hooker | John Huston | John Ford |
It was written by Jamie Delano and illustrated by Philip Bond, and features the character John Constantine, albeit several decades after most of his series continuity.
These include "a thoughtful man levitating in a voluminous blue cloak" in New York and "a blond-haired man in a dirty beige trenchcoat" drinking Guinness in a Dublin pub.