Obviously, Luke Cage is the man of the hour at Marvel right now thanks to the tremendous success, both critical and commercial, of the Netflix series bearing his name, so it’s only logical that their editorial brain trust would be ready in advance to capitalize on his small-screen superstardom with a solo series featuring the Hero for Hire on the printed page, as well. Unfortunately for us all, David Walker and Sanford Greene’s usually-awesome Power Man And Iron Fist monthly has been hijacked, like so many other titles at the moment, into the dull and derivative Civil War II fold, but fear not — while we’re all anxiously waiting for that crossover debacle to mercifully limp to its conclusion so that we can finally have our books back, the latest  (and fourth, by my count) Marvel Now! initiative has kicked off with Cage!, a new four-parter from the mind…