Nightwing turns to Strange. "Strange, this man has waltzed into my cave and demanded my valuables. He even tried to control your mind. A dragon must protect their land in this way, otherwise when he gets back to whichever settlement or village he comes from or travels to next, he will tell his story to the people living there and they will hear of how he escaped with no punishment or retribution. Once that happens, we will get a never-ending stream of foolhardy warriors and thieves who want either our heads or our possessions, thinking that they can just walk away unscathed if they fail. Trust me, it has happened to me before."