In this wave of the Harpy Force, in order to buy time for the rear troops, it can be said that they have done their best, but on the position of the foreign united army, the other party is outnumbered after all.

Although they have air superiority, and at the same time, the Europa artillery units in the rear will also provide them with long-range artillery fire support, but even so, the time they can buy is still limited.

The bomb reserves of the Europa Fortress have been dropped, and the Harpy forces can only kill them if they want to launch an offensive, but once they do, they will have to face the threat of the opponent's bolt rifles.

After several rounds of fighting, the harpy, who had already paid a lot of casualties, hurriedly began to raise the altitude of the flight and retreated back the moment she received the signal.

At this time, it is undoubtedly difficult to completely extinguish the fire, but they can choose to extinguish only part of it!

In the final analysis, what they are doing now is to open up the offensive line, not to really put out fires.

If they didn't need to attack, they could just retreat and wait until the fire burned out on its own.

However, everyone knows that this is not a smart approach, because after the burning, the foreign united army on the opposite side can be buried again.

With an army of this magnitude pressed here, they couldn't believe that the other party had such a small amount of stock.

Not to mention Raphael Balat and Tokugawa Masashige, both of whom are in the top ten players in the silver ranking, as two people of human civilization, after so many years of development, can there be no inventory in the warehouse?

Therefore, the best way now is to directly open a way, press it in one go, and don't give the opposing foreign coalition army a chance to rearrange.

With enough time to arrange, their army of human civilization is really not vegetarian.

A large number of Europa soldiers, carrying sandbags and shovels, pushed forward while extinguishing the fire, and finally cleared a way.

Although the fire on both sides continues to burn, as long as you pay attention, under normal circumstances, it will not be burned again.

Because of this fire, Hydra, who had tasted all the hardships, naturally would not let go of the foreign united army on the opposite side so easily, and roared and killed it at the first time.

As for the Dark Elf army in the rear, considering that the foreign combined army on the opposite side may have engaged in other ambushes, so Derk motioned for the Dark Elf army and Hydra to keep a distance for the time being, and follow far behind!

Hydra advanced all the way, and after triggering a few more mine traps along the way, a line of defense that was clearly temporarily built in a short period of time quickly appeared in everyone's field of vision.

Seeing those guys, the Hydra's eyes were even more ferocious, and a pair of scarlet eyes became even more scarlet and dazzling in an instant!

"Roar"

With a tyrannical roar, the surface of the hydra's body, the light of the spell flashed, and while applying a strengthening spell to himself, he rushed forward in one breath.

During this period, the foreign soldiers who were guarding behind the defensive line on the opposite side were about to open fire subconsciously.

Unexpectedly, at this moment, a dim circle of light spread at an extremely fast speed.

At that moment, feeling the inexplicable feeling of weakness coming from all over his body, the commander of the frontline unit of the foreign united army suddenly changed his face.

"Everyone be careful of the spell attacks on the other side!!"

As soon as the words fell, above the sky, a large number of harpies suddenly attacked, and the piercing screams directly stacked multiple negative buffs, and gave them appetizers for the luxurious combination package.

And when the opposite side has eaten the appetizer, the main dish in the back should naturally be served!

In the sky, a dark cloud full of ominous aura has condensed and formed invisibly.

In the next second, the first drop of rain fell on the shoulders of a foreign soldier, and with a soft sound of 'z', a strange black rain suddenly fell.

"Rain? It's raining? ”

"No, how is this rain black!"

At the same time as these thoughts flashed, a terrible scream soon resounded throughout the foreign territory.

"Ahh Eyes, my eyes!! ”

In the midst of the screams, a soldier covered his eyes with his hands, and the whole person fell directly to the ground.

"This rain is corrosive, so be careful not to get on it!"

The soldier just now made it clear that he let this weird black rain get into his eyes, and he was probably directly blind.

However, this is easy to say, the black rain has a huge range, and it is not easy to say that it will not be touched?

Many soldiers, the exposed skin, the moment it was touched by the black rain, the surface skin was corroded on the spot.

During this time, some soldiers simply took off their coats and put them over their heads in an attempt to block out the black rain.

But where is this black rain so easy to dissolve?

The fabric of the coat was quickly corroded, and in the blink of an eye, it became full of holes, and even the foreign soldiers who were hiding below at that time were corroded beyond recognition by the black rain.

At the same time, they also felt that their whole body seemed to become weaker than before.

Obviously, the corrosive stinging pain was constantly stimulating their pain nerves, but the soldiers felt a wave of dizziness, weakness in their limbs, and even some soldiers, after a period of uncontrollable shaking, fell to the ground on the spot.

The culprit who caused this black rain to fall was the army of dark elves, the twenty mid-level dark elf mages in front of the mage army!

At this moment, twenty mid-level dark elf mages were holding up the staff in their hands, and their mouths were constantly chanting difficult incantations.

More than half of the mages were already a little pale, obviously about to be unable to support them.

Because the spells they are casting now are beyond their original capabilities.

This spell is none other than the median spell of the fourth order, Cursed Rain!

Although they are also mid-level dark elf mages, as we all know, they are also mid-level mages, and their strength is also high and low.

Third-order spells and fourth-order spells are both mid-level spells, but mid-level mages who lack strength can only cast third-order spells.

The main reason why they were able to forcibly cast a fourth-order spell this time was naturally because there were some middle-level dark elf mages with enough strength to guide them, but the burden on them was still not small.

As a fourth-order spell, Cursed Rain is actually not too aggressive, and the effect of this spell is mainly focused on the corrosiveness of Black Rain, and at the same time, enemies who are contaminated with Black Rain will also be covered with a negative buff that is greatly weakened.

Of course, if this is the case alone, this fourth-order spell will inevitably be a little weak, so the strongest part of this spell lies in the large coverage area.

And in order to further expand this coverage area, and also to extend the duration of the spell, this time, Deck even ordered that the only twenty mid-level dark elf mages in his army join forces to cast spells! Almost an entire area of the positions of the Alien United Army was covered!

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