What did Arthur need for his dream of becoming a Dragon God? Worshippers!
That was the key, making it possible for him to reach greater heights than normal mages.
But he couldn't just go to anyone and say, 'hey, worship me.' It would be stupid, and people would see him as crazy.
Now, after he got the power of the Blood Monarch, there was a way to overcome that, which wasn't hard.
The heart of all living beings wants something, and if Arthur can give it to them — of course, not everything, as he's not overpowered — that would make them worship him without problems!
"Marylin," Arthur said, shifting his gaze from the boy to her eyes, "it is a powerful poison…."
Marylin's breathing pattern was irregular, and she said, "can you heal him?"
The thing she wanted to know was not what kind of poison it was, how her boy got it, or anything of the like. Marylin wanted to know if Arthur could heal her boy, as that was all it mattered to her.