When Voldemort first rose to power, with no possibility of losing his position, Orion used every spell he knew to protect 12 Grimmauld Place.
Even as the head of the Black family, he was no match for Voldemort. This was the only defense he could think of and create.
He had thought of every way to guard against outsiders, yet he had forgotten Bellatrix. She had brought Regulus with her to become a follower of the "Dark Lord."
The black-lacquered front door of 12 Grimmauld Place had a silver snake-shaped handle and no keyhole. The key in Pomona's hand that could open every door should have been useless on it, but Regulus's room had a lock. In theory, it could open that.
This house was their final fortress. Rather than add magic afterward, Severus preferred to inscribe magical arrays into the cement before renovation began.
Hogwarts's defensive magic had been added by countless people over a thousand years, and every summer all the teachers had to maintain it.
In Ancient Runes, Flitwick ranked first after Albus. It was Ravenclaw's specialty, but that did not stop the Slytherin Head from studying it.
This newly purchased house became Severus's new toy. He focused on designing it so it would have sufficient defensive power while also achieving Palladio's spatial proportions, allowing him to establish a private hidden space.
In exchange, there was that key that could go anywhere. It was now entrusted to Pomona for safekeeping. In any case, it was of little use to a snake skilled in spatial magic.
If a farmer only knew how to grow food crops such as wheat, he would never become rich.
Hufflepuff, on the other hand, grew rare potion ingredients. Potion masters had to pay real gold and silver for them.
Experiments consumed enormous quantities