This passage made Gandalf really don't know what to get back, except for so many years of friendship, the only thing he can do now is to use his only remaining magic power to suppress the magic power in Hera's body.

Because the previous Holy Light Advent magic was completely dependent on Hera's own body as an easy way to convert the various magical attributes of the little witches into light magic. Only the special properties of light magic can cause the most damage to these ice demons.

Therefore, Hera endured magical energy far beyond the limit of her body, and when she fought against the necromancer's death black mist, because the spatial magic element mobilized was too large, she finally triggered her own magic backlash.

Duke is also not very clear about the specific principle of magic backlash, after all, the whole theory of magic is very new to him. But he can probably guess that this is the same as Chinese martial arts, because it bears more power than the limit of his body, so it triggers the impact of this force on himself, so it forms a backlash.

Seeing Gandalf go to help Hera defend against the backlash of magic, Duke couldn't help much, so he could only quickly focus on the battlefield. Because with the end of Hera's magical light, the next storm army will usher in an even more brutal attack by the ice demons.

Duke had even seen that many of the Ice Demons had a hideous look on their faces, and although the impact of this black mist on them was not as exaggerated as that of ghouls, it could also enhance their combat effectiveness. At the same time, Duke also saw a particularly strange point, that is, after covering the holy light, this black fog did not dissipate, but moved quickly in the direction of Storm Fortress.

Although Duke didn't know what this black fog was, he thought with his ass, and knew that this thing was definitely not a good thing for Stormcastle. It's just that now Hera has fallen, Gandalf is also resisting the magic in Hera's body, and the remaining few low-level dark mages are completely useless, and Duke has no good way to deal with these necromancers!

Cannon! I must develop a cannon, only this thing can make these necromancers feel the roar of the god of war!

This is the only thought in Duke's mind at the moment, the range of the musket is basically not to think about, even if it is the rifle of later generations, except for a few sniper rifles, there is basically no accurate range of a thousand meters, and the vast majority of them end the battle within a few hundred meters.

If you want to really threaten the magical threat of thousands of kilometers at every turn, the only way to do that is to use the god of war, the cannon. Duke doesn't want to be accurate, as long as the range is reached, and then the number is crushed, so that they can feel what it feels like to plow the ground with artillery fire!

The ice demons and ghouls shrouded in black fog once again launched the official siege steps. The dwarven musketeer, Brass Beard, still using his loud voice, anxiously urged the musketeers to hurry up and fire their reloads, striving to be able to fire one more round and cause more damage to these monsters.

But in the face of the obviously more ferocious monsters this time, these rookie musketeers have not experienced a long period of professional training after all, and they will begin to tremble in their hands, and even when facing urging, the more urgent they are, the more mistakes will be made, but the effect of platoon gun shooting is not as good as before.

As the musketeers completed a round of fire and retreated, the dwarves and the human heavy shield infantry warriors once again held themselves to the edge of the wall, forming a steel line. This is the only human wall defense line left for Stormfort after the walls have been climbed and breached, and once they are breached, then the entire Stormfort will be in a moment of scuffle.

If there is any reason why the greatest advantage of the human army is, Duke can answer without hesitation is discipline! The army relies on discipline to fight in the queue, and plays the effect of one plus one is greater than two, but once it falls into a melee and there is a situation where it fights on its own, then the personal strength of the ice demon will be completely highlighted, and even if the storm army is strong, there may be a rout.

And once the Storm Army, which is already inferior, is defeated, the outcome will be doomed, and it will be difficult to organize an effective attack and counterattack. Therefore, it is necessary to stabilize the defense line of the Storm Army, and no matter what, this group of ice demons must be blocked under the city wall!

"Oil!"

Duke roared loudly, and the recruit soldiers who were burning oil under the city wall heard Duke's order, and immediately several people rushed up the city wall with hot oil cans, and splashed towards the ice demons and ghouls under the city.

But this time it was not only spilled, but also torches that were thrown down, and in an instant the oil was boiling and burning fiercely, and a sea of fire was formed under the entire city wall. Whether it was a ghoul or an ice demon, they let out a howl of pain.

This is also the offensive method that Duke has been preparing for a long time, and even in the first time he held back without ignition, just to use it at the most critical moment. The raging flames instantly hindered the attack of the ice demons, and this kind of fire oil, Duke also found a way to find some rubber trees on the coast, and mixed the most primitive rubber into it, just to increase the adhesion of the fire oil, so that they could not extinguish the flames on their bodies.

It can be said that this is the incendiary bomb of the Middle Ages, and even Duke did not dare to put these fire oils on the city wall to heat them, after all, if they were knocked over and the Storm Castle also did not know how to extinguish it, it would really be called a fire!

The effect was as obvious as Duke expected, but the effect lasted far less than Duke had believed. Because Duke soon felt that the temperature around them began to drop instantly, and some of the ice demons once again appeared with that dark blue light, and as the light spread, a thin layer of ice began to appear on the land around them.

The ice is constantly covered with burning flames, and the blue ice melts at a much slower rate than ordinary ice blocks. Even if it was fire oil, under this continuous low temperature and isolation, the flame began to slowly dissipate.

In addition to using magic blue ice to extinguish the fire oil, a group of ice demons once again used the blue ice spear, adding hundreds of climbing points to the entire Storm Castle walls and fortresses. It seems that they also understand that the narrow terrain on the city wall, if they can't quickly send troops up, they will eventually be stacked on the city wall, which is very unfavorable to the ice demon's offensive.

So this time, the Ice Demon used the magic sacrifice of hundreds of people, not only extinguished the fire oil, but also opened a path on the walls of Storm Castle, and they didn't plan to give Storm Castle another chance to struggle!