Although wizards had long grown accustomed to wands, wandlore remained an ancient, complex, and mysterious branch of magic. The magical power of wands had been tested and explored for a very long time, yet according to Ollivander, even those most familiar with wands had no way of fully understanding them.
But like many other mysteries in the world, every mystery had gifted people to explore it, and over time, it became better understood. At Père Lachaise Cemetery, Nicolas Flamel had everyone point their wands at the ground. Orange flames formed within the "circle"—the Purifying Fire used in the alchemy Nicolas Flamel excelled at. After battling the Fiendfyre produced by it and Grindelwald's Protego Diabolica, the "demon fire" was weakened before being sent underground.
Nicolas Flamel had lived for so many years, and his magical power was indeed stronger than that of the young people around him. However, the Philosopher's Stone could only keep him from dying; it could not stop him from aging. His bones were almost brittle enough to crumble at a squeeze, and he had not fought like this in two hundred years.
He borrowed the young people's strength while also enabling their wands, like his own, to control magical flames, even though they did not know what fire spell Nicolas Flamel was using.
This was also the new "task" Albus Dumbledore wanted to teach Pomona: how to let those interns set up a maze with ease. Just as a wand-weighing machine contained complicated mechanisms and devices, those passing a security check only needed to place their wand on its scales, wait a moment for it to spit out a slip of paper, and then leave with their wand.
Because the interns had signed magical contracts, they would not only be exempt from the Trace, but would also