Invisibility is a very powerful auxiliary spell. Even calling it the most powerful auxiliary spell is not an exaggeration. However, although the mages invented the invisibility spell, it was the thieves and assassins who maximized the effect of the invisibility spell! Those skilled assassins use various props and equipment with [invisibility] effects to sneak into various heavily guarded homes and castles to steal and assassinate! Although Oz couldn't be that professional an assassin, it would still be fine if he just sneaked up to the city walls - after all, the level of martial law in the city was completely incomparable to places like castles and military camps. At this time, Oz, with several monsters transformed from animals, carefully shuttled through the shadows of the city like a thief, and tried hard to avoid pedestrians and surveillance in the city. Although Oz's movements were very amateurish, with the help of invisibility, he could still easily avoid the eyes and ears of the patrolling guards. After adding several invisible magic effects along the way, Oz successfully sneaked into the side area of ??the city wall. In the shadow of the residential building, Oz looked at the looming city gate in the distance and took a deep breath: "Starting from this area, be careful of the invisible magic sentries." Although Oz wanted to rely on the royal family before As a mage, I conducted a close inspection of the city wall before taking action, but now I can only use backup methods. Oz cast himself a [True Sight] magic that can see through invisibility and a [Spiritual Sight] magic that can see magical auras. Along with the light blue magic light, Oz's figure appeared in the darkness. Oz¡¯s eyes flashed with light blue as he looked around. "There are no invisible magic sentries on the street, and no magical aura reaction has been detected. Very good!" Oz sat down in the shadow of the street corner and summoned several monsters transformed from various small animals. Then Oz controlled a monster that turned into a bird and flew into the air! The bird flew higher and higher under Oz¡¯s control. And crossed the city wall and flew out of the city. With the help of the bird¡¯s eyes, Oz began to look for corpses outside the city wall. Today, the war has not yet completely ended, so there are still many corpses outside the city wall that have not been removed or buried. One corpse after another remains outside the city, in the hot summer climate. It smells bad. After walking around in a circle, Oz found the section of the city wall where the most corpses were piled up. "The city wall is about ten meters high, and the width is five meters wide at the top, and the width at the bottom is estimated to be eight meters." Oz briefly calculated the range of the [Demonized Barrier], "The initial range of the [Demonized Barrier] It's only ten meters in diameter, so even if I use [Demon Barrier] against the city wall, it won't be able to cover the corpses outside As expected, other than the two options of leaving the city and creating corpses within the city wall, I can only transform the [monsters]. ¡¿Have you upgraded to level 4? "The number of death points required for skill upgrades increases exponentially. Upgrading a skill from level 1 to level 3 only requires 100 world death points, while upgrading from level 3 to level 4 requires 100 world death points. . If you upgrade from level 4 to level 5, you will need a terrifying amount of 800 world destruction points! However, with Oz's current savings, upgrading from level 3 to level 4 is not an unbearable amount, and even upgrading to level 5 is not impossible - it's just unnecessary. "There are thousands of corpses outside just for those who have seen them. If you include those who have not seen them, it is estimated to be tens of thousands!" Oz estimated the situation. If all those corpses were transferred back, a mere hundred world destruction points could be earned back. Thinking of this, Oz paid the death point very readily. ¡ª¡ª¡ª¡ª Skill: Monster Transformation Skill Level: Level 4 (200/1000) Skill Description: Can resurrect corpses into monsters; can cause corrosion and dark attribute damage to all living things and non-living things within a certain range, and convert all All corpses are resurrected into monsters; a larger range of [Demon Enchantment] can be deployed. Skill consumption: 0.1 magic value/meter.diameter. ¡ª¡ª¡ª¡ª Level 4 [Demon Barrier] does not have many changes compared to Level 3 [Demon Barrier]. The only change is that the initial range of [Demon Barrier] has become larger. After upgrading the [Monster Transformation] skill to level 4, Oz is ready to take the next step. Oz stood up, his eyes shining with light blue light. Looking at the city wall, he took a deep breath and forced himself to calm down: "Okay, let's go!" Oz actually used an [Ice Mirror] to create an ice mirror the size of a person. In a thin ice mirror, Oz clearly saw his current appearance. In the ice mirror, a man wearing gray linen clothes and a face covering appeared in the mirror. The man has a pair of deep eyes, and his eyes are shining with the light blue magic light brought by the [True Sight] magic. Oz took a deep breath and skillfully cast an [Invisibility Technique] on himself. With the effect of invisibility, Oz's figure disappeared into the air. Oz glanced at his hands, and then at the ice mirror that did not reflect anyone: "Very good. The invisibility technique successfully concealed the magical light of [True Sight]." After making sure that it could not be seen from any angle. After myself. Oz finally took a group of monsters and set off towards the city wall. Since the news of the orcs' retreat has spread, although the soldiers on the city wall are still standing guard and patrolling seriously, their concentration has dropped a lot, which has brought convenience to Oz to a certain extent. Oz slowly moved towards the city wall. But when Oz was only the last few hundred meters away from the city wall, a sharp scream suddenly came from beneath Oz! ¡°Wow!!~¡± A sharp scream that was enough to pierce the eardrums resounded through the sky! This sharp scream can be heard from the entire city wall! Oz lowered his head and saw a blue mushroom under his feet that kept screaming! "Screaming mushrooms? Why is there such a thing here?" But Oz quickly reacted, "Could this be one of the alarms set by the magicians?" It's a bit troublesome This kind of plant is not like guards or magic sentries. So easy to detect. At this moment, there was a sudden rush of footsteps coming from the direction of the street corner! Oz looked up and looked around, and decisively teleported back to the Demon Realm before the soldiers arrived. Soon after Oz teleported away, a group of patrolling guards rushed over. But at this time, there was no one in the alley. Only a shriveled mushroom remained. In the demon world, Mona is rolling beside the throne out of boredom. "Ahhh~ It's boring~~" Mona was rolling, "It's the most annoying thing to be separated from the Demon King!" Just as Mona was rolling and acting cute, the space on the throne was distorted, and then Oz suddenly appeared. On the throne. Oz sat on the throne and took off the towel from his face. Throw it aside. Tsk! On the way out, he was about to run naked again Thinking of this, Ozzy felt very subtle. "Hey~ Lord Demon King." Mona got up from the ground happily, "Has your plot been accomplished?" "What conspiracy, don't say it so harshly." Oz said angrily, and at the same time called up the Demon King system. Take a look at the [Conceptual Arms] skill. But when he thought that even if this skill was upgraded to level 4, it would not give him any trousers, Oz instantly lost the desire to upgrade. ????????????????????????????????????????????????????????????Outcome: It¡¯s better to save the level and upgrade it! Having been beaten up by a fanatic just before, at this moment, Ozzy's desire to upgrade completely suppressed his sense of shame towards the behavior of "streaking". "The whole process is invisible. As long as no one is noticed, it's okay to run naked" The expression on Oz's face was as calm as water, "Probably" "Master Demon King, what are you thinking about?" Mona stood in front of Oz. In front of him, he raised his head cutely and looked at Oz. If a girl sees Mona¡¯s harmless and cute expression, she will probably immediately fall in love with Mona¡¯s cuteness. Unfortunately, Oz is completely immune to Mona's cuteness! "Mona, I'm thinking. Is it really okay for me to keep these world-destroying points and not upgrade them?" Oz frowned and said distressedly, "Although things like the world-destroying points will not depreciate if I keep them, they will not depreciate in value. It can't increase in value either! But if I use them now, it can improve me a lot in all aspects, thereby gaining an appreciation in disguise But if I upgrade now, if I accidentally get injured and bleed, a group of cheaters will appear. Apostle, wouldn¡¯t it be a tragedy for me?¡± ¡°Then learn the skill.¡± Mona suggested to Oz, ¡°Mona, I strongly recommend that you upgrade [Monster Transformation] to a high level! It is easier to arrange the [Demon Enchantment], and at the same time, it can also improve the efficiency of transforming corpses, thus allowing you to obtain more destruction points faster." Hearing Mona's words, Oz's heart moved slightly: " The fourth-level [Demon Barrier] has an initial range of one hundred meters, so how big is the range of the fifth-level [Demon Barrier]?¡± ¡°I don¡¯t know!¡± Mona said lively, ¡°Mona, I only know. The effects of skills below level 3. As for the effects after level 3, Mona, I only know about the [Monster Transformation] skill Mona, I only know that the range of [Demon Barrier] will become larger and larger in the future. It can even directly cover the entire world! " "In that case, why do you strongly recommend the [Monster Transformation] skill instead of other skills? " "Because [Monster Transformation] is a necessary skill for the Demon King, and it can also help the Demon King.?Skills that bring abundant destruction points. Mona looked serious, "Other skills can be compensated by other means. Only the [Monster Transformation] skill has an irreplaceable position." " "I see" Oz stared at the [Monster Transformation] skill and thought for a moment, "Okay. When I can't level up, I will give priority to this skill. " Mona raised her thumbs to Oz: "A very wise decision, Lord Demon King. " "Well, that's right. Oz looked around, "Mother, has she rested?" "To be honest, Oz feels a little guilty when he sees Mrs. Irene now. After all, he and his sister did that kind of thing "As for Mrs. Irene, she just went out. "Mona explained, "The army of beast-eared maids has just arrived in Billy City, and Mrs. Irene is making arrangements for them. " "Since mother has already gone to make arrangements, then I don't care. Oz thought for a moment and then told Mona, "Go and help me get the book I haven't finished reading before." " "Yes, Lord Demon King! " Mona skipped away. Oz stayed in the demon world for an hour and read a book for a while. When Oz estimated that the commotion he had caused before should have stopped, Oz finally stood up. "It's not even close. It's time to go. "Ao took a deep breath and began to apply auxiliary magic to himself. "True Sight! " "Spiritual vision! " "Speed ??up! " "Fly! " "Wind King's Barrier! " This time there is no Mona to explore the way for Oz. Therefore, Oz must be prepared for the worst. After attaching auxiliary magic one after another to himself, Oz summoned the Demon King's cloak and held it. The magic sword wrapped in [Wind King's Barrier] disappeared into the demon world, leaving only a piece of clothes that could not be taken away. According to Oz's estimation, although the previous events would cause some commotion, after so many days. After an hour, even if there was any commotion, it should stop. You shouldn¡¯t encounter anyone when you go out at this time. But when Oz appeared in the main plane, something happened that Oz didn¡¯t want to encounter! When Oz appeared naked in the main plane, what he saw was a group of patrols passing by the alley When Oz saw the patrol soldiers, the soldiers also saw this naked man who suddenly appeared. "who! "The soldiers of the patrol team drew their weapons. But before they could take any further action, Oz took action! Oz's pupils shrank slightly, and he swung the magic sword in his hand without hesitation! "The Wind King roars! "The terrifying wind, with infinite power, rushed towards the enemy, tearing the unsuspecting guards into pieces! When the wind stopped, what was left in front of Oz was a bloody corpse. At the same time, , the alarm rang loudly on the city wall! ¡°Enemy attack! "The soldiers on the city wall yelled. Faced with this situation, Oz's brain began to work at high speed, and he quickly calculated the distance between his current position and the city wall. "Transfer! "Oz began to do his best to prepare the [Demon Enchantment], and quickly ran towards the city wall! Even if the patrolling soldiers heard the alarm, it would take a long time to rush over. This time is enough! With the support of the [Acceleration] magic effect, Oz flew like a gust of wind and rushed to the bottom of the city wall. At this time, the [Demon Enchantment] in Oz's hand was already ready! ! " A piece of black mist quickly began to spread outward from the bottom of the city wall. The black mist enveloped the city wall and the battlefield outside the city wall, and began to slowly expand outward. If nothing goes wrong, in a few minutes, the entire city will be shrouded in magic. Transformed into a barrier - just like Billy City!