"What's wrong, master?"

  Seeing Zhan's helpless bitter smile, Enya curiously opened her mouth to ask. Unlike others, Enya herself was a heroic unit recruited from the system, so she was also very clear about Zhan having the underground city system.

  "Has the system given you another difficult problem?"

  "If I had to say what's difficult, it's not really a difficult problem..."

  Facing Enya's inquiry, Zhan shook his head. To be honest, a task with five uses of magic was indeed strange, he had never seen any task that was judged in this way. But it's not surprising, after all, games on Earth are just games, and such blurry boundaries are also difficult for system servers to calculate. However, after following himself through to this world, the system seemed to have changed a lot, at least it could give out this task, so there must be a solution.

  Not only that, but Zhan also showed great interest in the rewards given for this task. Equipment rewards are rare in the dungeon game system. Because players play as the dungeon itself rather than a specific character, even if the dungeon gives out physical rewards, they are usually buildings or decorations. Now, this Book of All Laws looks like an equipment-type prop, and it's clear that this is also a result of the system's evolution.

  But...

  Thinking of this, Zhan En rubbed his chin and took another look at the skill information of "Evil Eye", but he slightly furrowed his brow. "Evil Eye" required 50 points of magical power to activate, which was the most among Zhan En's current magic, but this was only its minimum consumption value.

  After researching, Zhan Yan discovered that the magic system in the underground castle is different from this world's magic system. Take Iris for example, if she releases a 【Magic Flame Explosion】, the spell's consumption would be 90 points of magical power, and its power would be around 150-200. Even if there is additional damage, it would still rely on her being a high-ranking mage's 【Spell Penetration】 and 【Flame Specialization】 bonuses. No matter how Iris changes, the magic power consumption of her released 【Magic Flame Explosion】 cannot be lower than 90 or higher than 90. In other words, in this world, almost every magic requires a fixed amount of magical power. If Iris wants to release a spell with 300-500 power, she can only choose high-level spells like 【Dark Flame】 that consume more magical power.

  However, the dungeon is different. Take Jann's "Thunderbolt" as an example. The initial magic consumption value is 10, and the power is 100. However, this 10 magic consumption value is only the minimum consumption, and there is no upper limit. In other words, Jann can use 10 magic to release a Thunderbolt with a power of 100, or he can pour all the magic in the dungeon into it, releasing a Thunderbolt that consumes 1000 magic and has a damage of 100,000.

  Pikachu's 100,000 Volts, are you afraid?

  Of course, this is also determined by the characteristics of the dungeon system. The poor system with fewer spell slots can't exceed fifteen at most. What can be done with just fifteen spell slots? Even as a spellcaster, Elise can easily take out more than twenty spells. If the power doesn't increase further, then Jian, the dungeon master, will be even more miserable.

  The characteristics of the dungeon system are applied to offensive spells, after all, Zhan only needs to infuse different levels of magic power to test the difference in power between bullets, rockets, missiles and nuclear bombs. However, auxiliary spells like "Evil Eye" are mysterious, and skill information is also vague, but from the initial consumption, it can be seen that compared to the two offensive spells Zhan previously had, this "Evil Eye" is more advanced.

  In short, let's take a look at what this spell was originally used for.

  At this point, Zhan En no longer hesitated and quickly activated the "Evil Eye".

  Unlike the previous two aggressive spells, after activating the Evil Eye, Zhan's ears suddenly made a "buzzing" sound, and then the world in front of him suddenly changed color. In an instant, the originally hard and thick walls disappeared, and when he looked up, he could only see the edge lines of the edges, while other places were transparent, and he could easily see through the wall to see everything behind it. Moreover, Zhan was surprised to find that his line of sight could change at will, just like a telescopic lens, not only can penetrate various obstacles at will, but also can arbitrarily zoom in and out, making distant things clear.

  This spell is quite interesting.

  Seeing this, Zhan En was also secretly delighted. With such a spell, it was equivalent to having an extra pair of eyes that could monitor everything around him at any time and place. And moreover...

  As he thought of this, Zhan En once again withdrew his gaze and looked at Enoia beside him. Soon, in his eyes, the black dress that Enoia was wearing seemed to disappear like the emperor's new clothes, completely revealing her snow-white body wrapped inside to Zhan En.

  Tsk tsk tsk...... Indeed worthy of being called "Evil Eye", a name that is well-deserved......

  Upon seeing this, Zhan En's mouth corners slightly curled up. It seems that this should be one of the uses of the "Evil Eye". Immediately after, Zhan En once again focused his attention and looked towards the girl in front of him. Very quickly, following his line of sight, the girl's beautiful body gradually disappeared, replaced by a skeleton. Seeing Enoya who was previously extremely pretty now turned into a skull, Zhan En also shook his head inwardly, this can be considered as the realistic version of the "Red Powdered Skull".

  But when Jian En refocused his energy and continued to enlarge it, the world in front of him underwent another strange transformation.

  All that was left in his eyes at this moment was the disappearance of everything, and the whole world became dark, even Enyo herself was no exception. In her position, only a blue-green flame could be seen, which looked like a fireball floating in mid-air. Next to this blue flame was wrapped in white ice crystal, looking as if the fireball had been frozen, presenting a rather eerie shape.

  Is this... the fire of the soul?

  Seeing this flame, Zhan En was also stunned.

  In the entire Klein continent, the most in-depth research on soul studies is undoubtedly the demon tribe and the divine tribe. After all, whether it's a soul that has fallen into evil or one that yearns for light, they will go to their respective destinations after death and transform into new existences. For example, the souls of saints may ascend to heaven and transform into holy spirits, while the souls of cultists can only follow the River Styx into the demon realm, starting from the lower ranks of demons to "reincarnate". Therefore, in terms of soul studies, the demon tribe and divine tribe have the most say.

  Zhan En had read many books about the soul in the library of the Demon Realm, among which was mentioned that the essence of the soul is the Soul Fire. Whoever grasps the Soul Fire is equivalent to grasping a person's everything. Not only can they understand his personality traits, but also see his true strength and vitality. And most importantly, on the Soul Fire, an existence's "True Name" is engraved.

  The true name is different from the name called in daily life, it is the essence of an individual existing in fate and the world. Whoever grasps the true name can use this name to call and drive the other party at will.

  In other words, if Zhan Yan could obtain the true name of a certain demon king, he would be able to directly call out that name and summon it to his side, doing whatever he wanted with it, even ordering it to die. Of course, this true name itself was also a double-edged sword; the one calling out the true name also needed to have formidable power in order to withstand the backlash force brought by the true name, otherwise there would only be a dead end.

  As he gazed carefully, on Ennoia's soul fire, Jain could vaguely see a few things that looked like words. However, when he wanted to take another look, he felt a severe headache, as if a hundred needles were piercing his brain. This made Jain involuntarily hum a sound and immediately cancel the spell. Soon, the darkness dissipated, and the familiar scene reappeared in front of Jain. At the same time, Ennoia's voice also appeared in Jain's ears.

  "Master? Are you alright?"

  "I'm fine... just a slight headache..."

  As he spoke, Zhan En waved his hand. It seemed that this evil eye was indeed not bad, and the soul fire above did have a true name. However, with his current power, it was probably impossible to touch these true names. But this was also no wonder, as legendary true names were rules that existed at the time of creation, and he was just the son of a demon king, not even a demon king himself, so how could he have the qualifications to come into contact with such high-end things?

  After resting for a while, the headache gradually dissipated, and it wasn't until then that Zhan En let out a long breath, opening his eyes to look at Enoia beside him.

  "By the way, Enya, was there anything strange about me just now?"

  "Strange place?"

  At Jen's inquiry, Enyo thought for a moment.

  "No, master, just now you seemed to be simply thinking about something there, and nothing out of the ordinary could be seen... Ah, when you looked at me, I saw a golden light burning in your eyes..."

  "I understand."

  Upon hearing Enya's response, Zhan nodded his head. It seemed that the concealment of this spell was still quite strong and very useful. Being able to see the soul fire was an unexpected surprise. Although he couldn't currently discern true names, being able to know a person's true strength from their soul fire was also a convenient thing.

  Thinking of this, Zhan En opened the system again and took a glance at the prompts on it.

  [Obtained Evil Eye usage 2/5]

  Clairvoyance and observing the soul's fire should be two kinds.

  So what about the remaining three usages?