Voldemort's magical talent was indeed exceptional. Even with limited resources, he had managed to develop an unusual spell like the Flight Charm.
This was especially true when it was combined with his magical path, "I Alone Am Supreme." Without understanding that path, even someone who obtained the procedure for the Flight Charm would struggle to grasp its principles.
Looking at the contents of the notebook, Dumbledore marveled, "For Voldemort to think of a spell like the Flight Charm, and to accomplish it in this way... how audacious..."
"That assessment is rather conservative..." He paused, seemingly searching for a more fitting word. "Perhaps 'mad' would be better."
"We can also see from this..." He continued analyzing the contents of the notebook. "Voldemort had his own profound insights into bloodline magic."
"Yes!" Wizet nodded in agreement. "I think Voldemort's skill with bloodline magic must have stemmed from his obsessive investigation into his origins."
"At the time, Parseltongue was his only lead. Since he was searching for wizarding families skilled in Parseltongue, he would inevitably have encountered bloodline magic."
"Because so many wizards are prejudiced against Parseltongue, the more recent the relevant sources are, the less likely they are to contain any records of it."
"So, when Voldemort was investigating his origins, he could only search through ancient sources for relevant clues, which brought him into contact with those ancient forms of bloodline magic..."
Dumbledore understood what Wizet meant and sighed ruefully. "The older the bloodline magic, the more dangerous and deranged it tends to be. Many of its ideas violate ethical and moral principles."
He thought of Voldemort's origins, and how his appearance had gradually ceased to be human after his modifications. "But I doubt Voldemort cared about that..."
"What Voldemort sought was 'I Alone Am Supreme'-to be utterly unique. If I