Hogwarts: Capturing Nagini at the Beginning

Luo Bin traveled to the magical world of the West and obtained the golden finger - the Magical Animal Cultivation Cube!
As long as the magical creatures are defeated, they can be collected into the Rubik's Cube. Their magical attributes and combat effectiveness can also be improved through a series of feeding and cultivation.
Nagini's venom is too toxic and can only make the wound bleed?
Are garden gnomes so incompetent that they only dig holes in the ground and chew roots?
The mermaid in the Black Lake is ugly and can only lure people into drowning by singing?
The Whomping Willow's roots are deep in the ground, so it's only suitable for close attacks?
The Hungarian Horntail Fire Dragon is huge in size and has limited sight. Can't fight in close combat?
...
When the second-generation Dark Lord led his men to attack, they were shocked to find that Hogwarts had become a base camp for magical animals.
Then, he and his men were beaten so hard by the mutated creatures that they couldn't even find Bei!