Cover Art of Hellblazer (1988) #64.
*In his 39th year, John Constantine developed lung cancer... and a cure. Step One: Sell your soul to each of the Triarch ruling Hell. Step Two: Tell them all about Step One; if you die, the Triarch will go to war over your soul and Hell will fall to pieces. Step Three: Light a cigarette and laugh as they remove your cancer in a desperate bid to keep you alive. Constantine's gambit worked - until the devil found a way around the stalemate. Only Constantine's cunning and a demonic ally saved him then - but he knows all too well, the politics of Hell change day to day.*Source: Back of card