Hogwarts Summoning Guide.

Snape ultimately chose to stand by no one, neither attacking Onion Nose nor helping them fight Scarface.

The little-eyed creature on the ground saw that his robes were on fire, so he quickly cast a spell on himself: "Aigu Amenti (Clear Water Like a Spring)". Instantly, a large water ball appeared out of thin air, soaking his body and extinguishing the flames.

However, Bai Lin's "Frost Arrow" arrived just as he was getting wet, instantly freezing his small, soaked eyes into an ice sculpture.

"Croptus! (Binding Charm)" Bai Lin shouted at Scarface, whose wand had been knocked away. Scarface's hands were immediately bound behind his back by the spell, and Bai Lin then sealed his mouth.

"Harry!" Bai Lin shouted, running quickly down the slope and into Hagrid's hut.

Hagrid's hut was in complete disarray, but Harry was still standing. Although his robes were torn and blood was seeping from his shoulder, he was otherwise unharmed. Lupin, the grey werewolf he had transformed into, lay by the fireplace, his two forelimbs locked together, his two fangs like two giant clubs, stretching his mouth wide open. He was unconscious.

Harry, panting, said to Bai Lin, "Professor, I... I won!" Bai Lin couldn't help but smile at him.

The system notification appears: [Subdued two Death Eaters, Hogwarts Contribution +100, Current Hogwarts Contribution: 500]

Because they didn't kill the Death Eaters, each person only gained 50 contribution points. But Bai Lin still had to stay at Hogwarts, and he couldn't very well execute Little Eyes and Scarface in front of Onion Nose.

But when he looked at the main quest: [Main Quest: The Battle of Hogwarts Phase Two, The Trial of Loyalty (In Progress)]

[The Trial of Loyalty: Ensure Harry and Sirius Black successfully reunite, and that Peter Pettigrew receives his due punishment.]

Harry has reunited with Black and his father, but the second phase is not yet complete. It seems that Peter Pettigrew has not yet received the punishment he deserves, and therefore Black has not yet caught up with him.

Bai Lin called out towards Snape from afar, "Take Harry and Lupin back to the castle! I'm going after Peter!"

Onion-nosed glanced at Snape, wanting to step forward and stop Bai Lin from leaving, but Bai Lin quickly stepped forward, picked up a broom belonging to the small-eyed or scarred-faced man, and flew towards the direction Black had left—towards the Black Lake.

Onion-nosed boy stomped his foot and turned to look for his broom. When he looked up, Bai Lin was nowhere to be seen.

Harry watched Bai Lin leave, then turned to Snape and said, "Professor Snape, could you please help bring Professor Lupin back to the castle? We'll explain everything to Headmaster Dumbledore!"

In the original story, Snape was knocked unconscious and then transported back to the castle by Black using the Levitation Charm, albeit with various bumps and bruises. But in this story, it's poor Lupin who hasn't fully recovered from his werewolf form yet, although his teeth are slowly getting smaller and his face is starting to get shorter.

Snape snorted coldly, said nothing, glanced at Harry who was still holding his wand and looking like he was on edge, went into the hut, used the Levitation Charm to control Lupin's body, and walked towards the castle.

Harry had complete faith in Whitescale. He glanced at Lupin, who was suffering from the Crucifixion Curse, gritted his teeth, and followed Snape.

Bai Lin flew swiftly to the edge of Black Lake. Black Lake at night was even more mysterious and profound, its bottom unseen. Small patches of moonlight were reflected on the water's surface, as if the lake had absorbed most of the moonlight, reflecting only a little.

Sirius Black, who had transformed into a large black dog, was pacing back and forth on the shore. Bai Lin flipped over and jumped off the broom, casually tossing it onto the grass.

Blake transformed into human form and angrily said to the Black Lake, "The scent disappears here; they must have jumped into the lake!"

While observing the lake's surroundings, Bai Lin said, "We can't let him get away; we must execute him on the spot today!"

Blake took off his coat and said resentfully, "Peter's a great swimmer, let's go in together!"

Bai Lin said, "Hey, I happen to have a useful little skill... Mermaid's Blessing!"

With a wave of his hand, Bai Lin conjured up two mermaid-like phantoms in the air. However, they were not the beautiful maidens from fairy tales, but rather fatheaded fish with yellow-green seaweed-like hair, and human arms.

Regardless of whether the mermaids in the Harry Potter world are beautiful or not, two mermaid phantoms slowly landed on Bai Lin and Black's heads. The two immediately felt an itch under their ears. When they touched it, they found that mermaid-like gills had grown out. Looking at their hands, they found that webbed fingers had also grown out.

This is much more effective than the regular head-breathing spell. Not only can it allow you to breathe underwater, but it can also make you swim as fast as a mermaid.

Blake was intrigued, but his hatred for Peter made him grit his teeth, rush to the lakeside, and plunge into the icy water.

Bai Lin muttered, "I really wish I could invent a warm spell or something..." He then took off his coat and shoes and jumped into the lake. His coat was made by Catherine with exquisite materials and fine workmanship, but in the water it obviously only slowed down his swimming speed.

The cold lake water made Bai Lin shiver, but due to his years of training, he was in good physical condition and quickly adapted. Opening his eyes, he was surprised to find that even though it was night, the effect of the mermaid's summoning allowed him to see very far in the lake. He and Blake were several dozen meters apart, so he expanded his search area and swam towards the depths of the Black Lake.

The bottom of Black Lake is covered with seaweed several meters long. If something the size of a rat were hiding there, even dozens of people probably wouldn't be able to find it. However, although Peter is a good swimmer, it's obviously unrealistic for him to hide at the bottom of the lake without any mermaids calling him or carrying gill sacs. It's more likely that he will swim as far as he can and find an opportunity to go ashore and hide.

The Black Lake is teeming with fish, some nearly two meters long. If Peter were to turn into a mouse and swim, he would likely be slow and likely end up in the belly of a fish.

Bai Lin swam and searched while pondering a strategy.

At this moment, a group of Grindelwald monsters swam over from the bottom of the lake and circled around Whitescale. These are level 1-2 magical creatures from the Black Lake. Their upper bodies are somewhat like goblins or house-elves, while their lower bodies are like octopuses with many tentacle-like legs.

Greendylow is unfriendly to Muggles and wizards, or rather, they are a group of mischievous and reckless little devils. In Ireland, there are often cases of people drowning after being tricked by Greendylow. In Harry Potter and the Goblet of Fire, he also prevented four warriors from going into the water to save people.

However, Bai Lin was very happy. He already had +4 Magical Creature Affinity. Simply put, this level of creature affinity would make many creatures that were originally friendly to humans, or low-level unfriendly creatures, treat Bai Lin as one of their own.