The dark clouds in the sky give people a very strong sense of oppression.
Even if Cecilia didn't remind, everyone present knew that it must be a huge magic bombardment.
The light emitted by Gulu can't hold the cover of the dark cloud. At the moment, it can only fall back to Cecilia. It can only be regarded as a growing small animal now, let alone an adult. If it is calculated according to the age of human beings, it may look like four or five years old. It is very important to have three kinds of natural abilities. But if you want to expect Gulu to help in the war, it's better to expect reinforcements from the sky.
Cecilia carefully put away Gollum and looked up at the black lightning shining from time to time in the dark cloud.
"Can you see what magic it is?" There was no panic on William's face.
"It should be acid rain." Cecilia said, "after all, skeleton mage is only level 3. He doesn't know much about undead magic. There are only three great ones. Summoning skeletons is one, and bone recovery is also one. Now summoning such a large area of dark clouds should be acid rain. "
"After the undead creatures gather together, there will be a power bonus of dead Qi, and the intensity of acid rain will be increased." The one who spoke was Eliza. Her ability was strange. The weapon she used was also a magic guide gun that people had never seen before, but in essence, she was more inclined to magicians, "it may be a strong acid rain."
"But their magic can't be infinite forever." Cecilia whispered, "it depends on whether the rain is urgent or slow."
"What do you mean?" Although William has a lot of knowledge about magic, he has never had a mage group under his command, so many fantastic tactics have no place to practice, and naturally lack a certain degree of cognition.
"Miss Cecilia means that if the rain is urgent, the power will be strengthened again, but it can't last too long." Eliza explained, "if the rain is slow, it is likely to last for a long time, but its power is weaker than the sudden rain But whether it's slow or urgent, according to the magic damage standard, strong acid rain can reach the damage standard of level 3 magic. "
"If it's urgent, it's the quasi level 4 standard?" Asked Alfred.
"At least four levels." Cecilia replied, "but it won't take more than ten minutes."
"Level 4 magic attack lasting ten minutes?" William's face finally changed.
If it is level 2 or level 3 magic, the latest impact shield can withstand it. After all, with the increasing prosperity of the void principality, some more important materials begin to mix with more rare anti magic materials. Although these anti magic materials are not the top ones, and the dosage is not particularly large, there is still no problem if they are used to resist Level 2 and level 3 magic. Even level 4 magic also has certain resistance and immunity.
However, a level 4 magic attack lasting ten minutes can't be stopped unless it is made of level 3 or more anti magic materials.
"Acid rain magic is different." Eliza said, "the damage of this magic is cumulative. In other words, we have stood in the scope of acid rain magic for long enough to have this power damage. If you find a place to hide when it rains, the power and damage of this magic is not high. "
"So, as long as we use the mutual protection and combination of impact shields, we can survive the acid rain?" William asked humbly.
"I can make it." Cecilia gave a positive answer because she knew what William meant, "but we can't afford it."
"Why?" William doesn't understand.
"It's not difficult to stay in the rain for ten minutes, but you have to change your shield almost every other minute." Cecilia said, "I've calculated that the whole steel wing and the shields of all soldiers are needed in ten minutes. The acid rain is destructive to the impact shield to a great extent. Basically, it is impossible for these shields that support the shield and block the rain to open the nail pile. "
At this point, the meaning is very clear.
The construction of the white bone ladder is to give these undead the opportunity to rush up the wall for hand to hand combat. Just look at the formation of those skeleton cavalry, you can know that once the white bone ladder is built, those cavalry must charge at the first time, trying to tear a hole for the skeleton infantry behind to attack the wall.
This is also the reason why Levi kept reminding the dangers of the white bone ladder.
Abaza, however, said that these stairs were ignored at all. Levi doesn't understand why, but everyone else knows, because they have impact shields - as long as the nail piles of impact shields are driven down and formed into an array, they can't break through the steel wing defense unless the cavalry Corps above level 7 charge and attack. This is also the fundamental reason why steel wings can become the color change of all cavalry legions in the whole southern continent. It is also the reason why countless enemy countries want to steal the production drawings of impact shield.
But now, if you have to sacrifice the impact shield to resist the acid rain, how can the enemy's skeleton cavalry resist the charge even if the acid rain is blocked?
No block.
You can only fill it with your life.
William frowned. Even if he was one of the top ten generals in the world and was good at using tricks and soldiers, he couldn't do the job of "a clever woman can't cook without rice". Of course, he believes that even if the steel wings do not have an impact shield, it is not a problem to block the charge of the skeleton cavalry. After all, the skeleton cavalry is only a third-order undead. At best, it is a fourth-class army. If the standard is poor, it is only the level of the third-class army. It is no problem to block the steel wings that have reached the level of the fifth class.
However, this is a cavalry charge after all. Without the special ability of impact shield, there will be casualties.
In the case of casualties that can be avoided, William is not willing.
But before William and others came up with a good way, those skeleton mages who gathered together launched acid rain magic.
Green rain began to fall in the cloudy sky.
"Hide!" William roared in a deep voice.
Those steel winged soldiers standing under the city wall immediately looked for buildings nearby to take shelter.
The wild fortress has been empty since it was broken for the first time. Although the Cruz touch destroyed one-third of the fortress, this unmanned city has plenty of places to rest. Therefore, even if there are nearly 100000 troops, there is no place to rest. At this time, except for 30000 steel winged soldiers on the wall of the fortress, the rest of the Legion were taking a rest for the next war, so the acid rain had no impact on them.
What's more, now that they have received William's order, these people will not come out to make trouble.
The 30000 steel winged soldiers standing on the wall also began to form ten small steel winged arrays according to Cecilia's urgent orders.
Each array of 3000 people, collect shields, stick to each other, stand on the side, and lift only 800 shields.
The impact shield is a heavy tower shield. One shield can accommodate three to four people to hide together, and the coverage area formed when 800 shields are lifted together is naturally not small. Four hundred people are enough to hide in 3600 people. However, the shield lifting method of the steel wing array is not to fully expand the heavy shield, but is similar to the construction method of the white bone ladder: shield folding shield. In this way, although the scale will be smaller, the scale of 3000 people is still enough.
This way of stacking shields can naturally ensure that only a part of the impact of one shield is borne each time. Just adjust the angle of lifting the shield and the overlapping place, and one shield can be reused three or four times. Even if it is calculated three times, this small steel wing array can make a resistance time of up to nine minutes. As for the last minute, it can only fight to completely lose 800 impact shields.
As for Levi and other strong people, they are naturally not afraid of this acid rain magic. Although William is just an ordinary person and has no self-protection ability, he has a group of strong people around him, which is more than enough to protect him.
Because of the fall of acid rain, the defense capability of the whole fortress wall was almost completely disintegrated.
However, the damage of this kind of large-scale magic does not distinguish between the enemy and ourselves. Therefore, the attack range of casting magic is only limited to the wall of the fortress and the whole fortress, and does not expand the range to the white bone ladder under construction.
Therefore, without any interference and obstruction, the construction speed of the white bone ladder obviously becomes faster and more crazy. Almost every minute, we can see that a new layer of the white bone ladder has been built. At this time, the height of the whole white bone ladder has reached 20 floors, and the height is almost 17 meters, and the spread length is more than 30 meters. Except that there is no structure at the gate, the white bone ladder built around the walls on both sides of the gate has an unusually complete prototype.
I'm afraid that in a short time, the 30 meter high wall will not be able to block the undead army outside the Great Wall.
But soon, the army of the dead didn't even let the garrison of the fortress watch the progress. Because of the need to stop acid rain, the steel winged defenders hold the impact shield high, and those who do not hold it high also close in the array, which is very much like an eagle with convergent wings. Therefore, those skeletal archers have a higher chance of free attack. In order to avoid losses, William could only order Abaza to retreat the steel wings on the city wall, not too close to the edge of the city wall.
Looking at the originally offensive and defensive war situation, just because there was a skeleton mage group in the undead army, the good situation was completely suppressed and subverted, and even the counterattack could not be done. William's heart was almost bent and vomiting blood.
Since he became the military commander of the void duchy, he has never fought such a cowardly war!
William's teeth are almost broken!