The Prisoner of Azkaban.
In the third Harry Potter book, no one was surprised by magic the way they were in book one. It had become the background, the norm.
The story weaved forward now with this reality.
It doesn't take long for magic to become normal.
The question that matters is - What's the story we are going to weave forward?
"Any sufficiently advanced technology is indistinguishable from magic."
~ Arthur C. Clarke