"Sycamore, thestral tail hair, an opposing combination of life and death..."
Su Er spoke quietly.
"Yes, wandlore is as ancient and profound as alchemy," Grindelwald said. "Even I cannot explain the connections to you in detail. Unlike the traceable history of spell development, it is mysterious and wondrous, accompanying a wizard throughout their life in an entirely different way."
"Now, you don't have much time."
"Over the next few days, you need to thoroughly digest the contents of this book, learn the one spell recorded in it, and firmly commit every step to memory."
Su Er looked at Grindelwald in surprise. "Why aren't you doing this yourself? I mean the ritual magic in this book."
"It isn't that I don't want to." Grindelwald chuckled. "As I just said, escaping Death's clutches comes at a price. Immortality? It isn't that easy. I'm nothing more than an ordinary old man now. One careless fall could easily kill me."
"But in that case, once Professor Dumbledore is resurrected, how will he resist Voldemort at his full strength without his magic?" Su Er immediately asked.
"Well... Albus is different from me." Grindelwald gave a mysterious smile and pointed at the book on the coffee table. "You'll understand once you've read this book."
Over the next few days, Su Er stayed in the little town.
Grindelwald truly lived like an ordinary old Muggle, going to bed early and rising early, strolling through the town's streets at sunrise and sunset. Like Dumbledore, he loved sweets. Rosier often reminded him to eat fewer of them; he was old already, and if he ate too much sugar, he might lose all his teeth.
Monschau, a little town nestled among the mountains of Germany's largest state, turned out to be where the Saints had retreated into seclusion after their