As a necromancer, Rollin often needed a cauldron to process materials and brew potions.
After all, his little darlings weren't entirely self-sufficient.
Mana supply was one thing, but there were other things that could save Rollin's own mana.
Of course, Rollin had plenty of mana now.
Mainly because he didn't have too many little darlings under his command.
So, for now, he didn't need a cauldron.
But not needing it now didn't mean he wouldn't need it in the future.
Deep down, Rollin always had an idea.
One day, he would become the most powerful necromancer.
Then, he would try a necromantic apocalypse.
However, other necromancers' necromantic apocalypses were meant to bring disaster.
His necromantic apocalypse was just to bring them out for a sunbath.
Rollin had no intention of retaliating against society.
After all, he was now a registered Azkaban prisoner.
His superior department was the Ministry of Magic.
The Ministry of Magic provided him with housing, allocated various supplies, and even paid him a salary every month.
That's right.
The Ministry of Magic paid him a salary, and it wasn't low.
Otherwise, where would he get the money to buy things in Diagon Alley?
He had shopping desires too, okay?
It was just that he was usually too lazy to go out, so he had others buy things for him.
High salary, good benefits, and no need to do much work!
What a great superior department.
Loyalty!
Rollin was very loyal to the Ministry of Magic now.
Provided that the Ministry of Magic continued to maintain such good treatment.
Otherwise, his loyalty would also decrease.
Looking at the cauldrons.
Rollin thought carefully.
Let's forget it.
There's no need to spend that extra money.
When he went to Hogwarts.
And became a professor.
Dumbledore should provide one.
It was more comfortable to use public property, and the quality was guaranteed.
As for why a Defense Against the Dark Arts teacher needed a cauldron?
One could only say, did it matter?
Shouldn't the school consider what teachers needed and then provide it to them?
Besides.
A wizard who was a professor at Hogwarts didn't even have a cauldron.
Dumbledore wouldn't be able to save face, would he?
Rollin, in any case, felt that Dumbledore should provide him with a cauldron.
At worst, he would submit an invoice at that time.
Leaving the cauldron shop.
Rollin strolled through Diagon Alley.
He saw countless shops here.
Eeylops Owl Emporium, a pet shop selling owls and owl supplies.
Rollin didn't need this; he had his own adorable owl.
Florean Fortescue's Ice Cream Parlour, Rollin bought one, and the ice cream tasted pretty good.
Weasleys' Wizard Wheezes, a joke shop, Rollin wasn't very interested.
He wasn't someone who liked to show off or play pranks.
Only people like the Weasley twins and Lee Jordan were more suited for this place.
Gringotts, the only known bank in the wizarding world, where most people would deposit their money and valuables.
Rollin didn't need it; he had a spatial storage given by the system, which was no smaller than Gringotts' vaults.
Secondhand shop, a shop selling used goods, Rollin didn't need it either; he had money and wanted to buy new things!
Madam Malkin's Robes for All Occasions, a clothing shop; Rollin had originally planned to go in.
But then he thought, Hogwarts should have custom-made professor uniforms, so he gave up.
Freebies were always better.
As for other shops like ladies' beauty salons, magical creature shops, Quidditch specialty stores, stationery shops, magic supply shops, and so on.
Rollin didn't even glance at them.
There was basically nothing he needed in them.
The only one that made him pause slightly was Ollivanders Wand Shop.
The only wand shop in London, a monopoly; young wizards all had to buy wands here.
But he didn't have any need for a wand.
His necromancy didn't require a wand, or even chanting spells or hand gestures.
One could say it was an innate talent, or an active skill with no operational threshold.
This brought up Rollin's system.
His system was called the Undead Sovereign · Mage System.
The system's functions weren't complicated.
It was just a system core with some modules installed.
The system core could devour all kinds of items containing necromantic aura, then raise Rollin's necromancer level.
The installed modules included the Soul Servant Module, Storage Space Module, Perception Enhancement Module, and Scan Module.
There should be some other modules, but Rollin hadn't found a way to install them yet.
Among the four existing modules.
The Storage Space Module and Scan Module were built-in.
The remaining two were modules he obtained after mastering soul manipulation and enslaving Dementors.
Their functions were exactly as their names suggested.
One was a module for controlling soul servants.
The other could greatly enhance his perception and exempt him from any mental negative effects.
All of Rollin's necromantic spells were derived from his necromancer profession.
His panel attributes were as follows:
Name: Rollin Rathma
Age: 22
Main Profession: Necromancer Lv65
Sub Profession: Wizard (Harry Potter World) Lv2
Main Profession Skills: Awaken Undead Lv10max, Manipulate Soul Lv15max, Terror Lv10max, Mass Terror Lv12, Awaken Advanced Undead Lv18, Banshee Wail Lv11, Flesh Golem Lv8, Transmute Lich Lv2... (forty-four omitted)
Sub Profession Skills: None.
It took a year.
Rollin's main profession, Necromancer, had already reached level sixty-five.
He wasn't entirely sure what level sixty-five meant.
Anyway, being able to awaken advanced undead meant he could be considered an advanced necromancer, right?
As for the sub-profession, Wizard.
The reason it had a level.
Was entirely due to the level bonus from the magic power within his body.
As for everything about wizards, Rollin truly knew nothing.
He had never systematically learned any wizard knowledge.
After becoming a necromancer, he spent most of his time in Azkaban.
He either interacted with undead, Dementors, or those people from the Ministry of Magic.
Undead and Dementors were out of the question; they couldn't teach him anything.
Those people from the Ministry of Magic also kept their distance from him.
Plus, Rollin's main profession leveled up very quickly, and the sub-profession's role wasn't that big, so he was too lazy to learn it.
Now that he was about to enter Hogwarts as a professor.
To avoid misleading the students.
Rollin planned to make a last-minute effort, to intensively learn the wizard knowledge of this world.
At least he had to raise his level to above ten.
To make himself seem less like an amateur.
Of course.
Rollin didn't intend to learn everything.
He didn't have that much energy.
Mainly, he would learn the subject he was teaching, Defense Against the Dark Arts.
Defense Against the Dark Arts was about teaching students how to resist various types of dark magic.
Including dark magical creatures, various dark curses, and dueling.
This was a core course at Hogwarts.
It was very important for Hogwarts students.