I'm not entirely sure specifically about 'All his engines Constantine graphic novels'. It could be a very niche or new series. Maybe it's about the character Constantine in a graphic novel setting with some sort of connection to engines? It's hard to say without more context.
The 'All his engines Constantine graphic novels' is quite an interesting title. It makes me wonder what the 'engines' symbolize in relation to Constantine. It could be that the engines are a key element in a new and different Constantine story. Maybe they are related to his powers or the challenges he faces. For example, the engines could be a source of energy that the supernatural forces in the story are trying to control and Constantine has to stop them. Or perhaps they are part of a new world - building aspect, like a city run by engines that has its own set of problems and Constantine is there to solve them.