alternatively, you could locate and beat up a chemist, buy the proper chemicals, create numerous chemical bombs, pay some thugs to plant them around new york city, blow them up, and move from area to area continuing to do this. Hell, just plant enough bombs in the sewers of new york and you can take out most of the homeless and Morlocks living down there. Maybe have a few Couriers deliver some packages to hospitals, let yourself get arrested, go to jail without letting anyone know what your powers are, murder most of the people in jail and escape........
If the end result is that you're going to end up taking over Marvel, that obviously entails beating/killing at least one character that can bring people back to life. By the time I'm finished, I'll just bring these people back to life.