Ivan tried to raise his hand, but his movements were much stiffer than usual, and he waved his wand again, and found that there was no obstacle to the operation of the magic power, so he turned his head to look at Sirius and the others in reassurance.

By this time, Sirius and Lupin had already drunk the potion, and their faces were blue and blank, not at all like living people.

"Great, they're gone, it looks like this medicine works!" Lupin looked at the lake, his expression was very stiff, and said in a hoarse voice.

Ivan also looked over, and in the faint fluorescence of his wand, the pale arm sticking out of the lake slowly fell silent.

Soon, the black surface of the lake returned to its previous calm.

But whether it was Ivan, Sirius, or Lupin, they were all a little chilled when they looked at the calm and waveless lake in front of them.

Judging from the number of arms that came out just now, there are probably hundreds of Yin corpses in the fluorescently covered area...

And the whole lake is too big to see, Ivan desperately hopes that most of the Yin corpses in the entire lake will be attracted here, otherwise, the number of Yin corpses will be even more terrifying than he imagined...

Hundreds... Thousands... Thousands?

Or...

Ivan didn't dare to think about it any longer, it was a number he couldn't accept.

After calming down a little, Ivan remembered something again, turned to look at Sirius and Lupin, and said apologetically.

"I'm sorry, it looks like I was careless just now, and I took the liberty of lighting up the lake and alarming them..."

"No, I don't blame you! It's not the light, we're still maintaining the effect of the lighting spell, but they don't come close, which means it's not the light that attracts their attention. Sirius shook his head stiffly and calmly analyzed.

"I guess there are too many people coming in!"

Lupin's voice rang out, and he picked up Sirius's words and continued. "Kreacher told us that he had accompanied Voldemort and Regulus in and that the corpses at the bottom of the lake had not moved."

"So two people are safe, that's the boundary set by Voldemort, an intruder with a victim!" Ivan said guessingly, as he recalled his memories in his mind.

Voldemort certainly didn't want anyone to steal his Horcruxes, but considering the possibility of transferring Horcrucates in the future, some restrictions had to be lifted, such as allowing two people in!

If the number of intruders exceeds this limit, the huge tide of Yin corpses will overwhelm all the intruders.

However, thanks to Kreacher, they knew the situation in advance, prepared the corresponding potions, shielded their vitality, and let the yin corpses under the water sense that the number of living creatures on the shore is zero, and then they fell silent again.

"yes, that's about it!" Sirius nodded, but remembered what had happened to Regulus, and hesitated to say it again.

"I don't think it's safe for even two people to come in, because Regulus ended up being dragged into the water. That means that once someone drinks the potion placed in the center, the Undercasters will get restless, attacking all creatures that come near the water, and overturning their ships! ”

What a desperate sight it must have been on an isolated island in the middle of the lake with a potion-drunk drag, facing hundreds or even thousands of Yin Corpses, not to mention that normal intruders have to row out in a small boat and fight Yin Corpses on the lake!

Thinking of this, Ivan was glad that he didn't have to do such a dangerous thing.

Although what they have to do now, it is possible that it is more dangerous than that...

While the three of them had analyzed the limitations of the cavern, Kreacher was trying to figure out how to lift the boat.

The old house-elf went around and around, and finally stopped on the shore on the right, looking blankly around.

"That ship should be around here, gentlemen! It's possible that the chain is invisible, and Kreacher can't see it! Kreacher reached out and grabbed at the void, but it was possible that it was too short to reach it.

"Aparecium~" Sirius raised his wand and waved, and the magic fluctuated from the tip of the wand in all directions, and the water on the surface of the lake rippled slightly, but nothing happened.

"Voldemort's own magic must not be so easy to break! Let's take a closer look! Lupin shook his head, raising his hand and swiping in midair, searching for the chain hidden in the void.

Ivan stepped forward to help, but to no avail, which made him frown, wondering if they were right in this way.

What did Dumbledore do in the original plane? Grab the chain in the void and pull it out?

But how should I catch it?

After many years, Ivan's memory in this area has become a little fragmented, if he hadn't practiced brain occlusion, he could organize his memories by himself, I'm afraid he would have forgotten it a long time ago.

Moreover, Dumbledore's magic level is very high, and what he can do, he may not be able to do.

No, it's not! And how did Regulus raise that little ship?

Ivan thought about it and felt that it shouldn't be so difficult, Regulus couldn't be stronger than them, it should be something he neglected.

Ivan's mind moved, trying to attach the magic to his hand, and continued to explore as he had just done, and after a few moments, his palm touched a cold, long, very hard object.

"Found it!" Ivan called out to Sirius and Lupin, who were still looking, and pulled his hands hard.

The void suddenly resounded with the sound of tintin, the last sound of chains cutting across the surface, and then a thick green copper chain suddenly emerged from the depths of the lake and wrapped itself around Ivan's arm like a snake.

Ivan struggled to pull the boat out, his expression was struggling, his face changed, and he almost let go, because he sensed that his magic was being rapidly devoured.

Sirius and Lupin hurriedly followed Ivan's example, attached the magic to their hands, and pulled the chain to help, but they soon found that they couldn't pull at all, and no amount of strength could be used.

"Don't waste it, it's only going to suck my magic!" Ivan sighed and guessed the mechanics of the ship's operation.

Since he had lost so much mana, he couldn't afford to lose his efforts, so Ivan simply pulled the chain again, and a large amount of mana poured into the rusty copper chain from the place where his palm touched.

When the mana was nearly halfway through, the chain shook violently and pulled something up from the bottom of the dark lake.

It was a small boat, the bow of which suddenly surfaced like a ghost, and the hull of the ship floated out like a chain and glowed green, and floated towards them.

Strangely, the Black Lagoon remained calm, as if the ship didn't exist, just their hallucination.