Cook could not hold on any longer. His right arm was already injured and this was deadly to an Elemental Swordsman. This meant that he had lost half of his combat ability.

Count Selin was the most nervous one. He looked at Cook in panic. Anxiously, he shouted at the black-robed old man, "Wizard Hill!"

The old man's wrinkled face appeared calm at this moment. He reached out his wizened hand and spoke softly, "I haven't worked out for a long time… Three-Elemental Wizard? Hehe. Merilung, if you're truly a Three-Elemental Wizard, I don't think you'll get accepted into the Abyss Fort. Show me your true strength!"

"Swoosh."

As soon as he finished speaking, he dived forward suddenly. His usually thin body contained an incredible explosive force. He dived into the dark night in the blink of an eye.

"Old man, sticking your hands in this mess so rashly. Aren't you afraid that your Spell Model may crumble?"

Merilung saw the old man wrapped in his black robe and squinted his eyes. His expression immediately turned serious. Obviously, he appeared to know the black-robed old man.

However, as if he had not heard Merilung, Wizard Hill raised his hands up high as he dived forward.

"Swoosh! Swoosh! Swoosh!"

Five fireballs immediately appeared. They pierced the sky and flew toward Merilung, whistling.

This is a Zero-level Spell, Fireball. There was not much difference between this and Merlin's Fireball. However, the fireballs released by the old man appeared lighter and quicker. His control over them was even stronger.

This was because the old man's Mind Power was stronger and his control over spell was more skilled. However, in terms of the fireball's power and stability, Merlin's Fireball was definitely more excellent since it was chosen by "the Matrix" from one hundred and eighty thousand Spell Models.

Five fireballs lined up in a row and directly closed off the road in front of Merilung but the old man's trick was far more than that. If not, he would not possibly survive from the "Slaughterhouse" war.

After casting five fireballs, the old man remained silent, his hands waving without rest. The waves of Fire Element were so strong that they even made Merlin go pale.

"Swoosh!"

A few fireballs appeared again. Balls after balls of flame kept appearing without a limit. Moreover, the old man's speed of creating the fireball was astonishingly quick.

Merlin estimated roughly that the old man's speed of releasing fireballs was at least double to triple of his own speed.

In such unbelievable speed of casting Fireball, the old man had almost surrounded Merilung with a fireball in an instant. Numerous fireballs pierced the night sky and flew in bunches toward Merilung. This scene was nothing less than the scene when the crossbow archers released their arrows at once.

Staring at the fireballs surrounding him, Merilung wore a serious look. At least twenty fireballs were whistling around him. The Earth Element in his body began to vibrate in a frenzy.

"Boom!"

Rows of earthy-yellow walls rapidly rocketed out of the ground and surrounded Merilung tightly.

"Bang! Bang! Bang!"

One by one, twenty fireballs collided into the walls. Since Merilung's Earth-type spell was only a Zero-level spell, it might stand against one or two fireballs. However, it had no way of standing against all these fireballs.

The walls crumbled apart in an instant and Merilung could only cast the Earth-type spell again. Each time a wall crumbled apart, his face would turn ghastly pale. Casting the spell continuously also took a toll on Merilung.

In terms of Magic Power, Merilung had no chance of winning against the black-robed old man.

"Old man, it seems that you don't care about the danger of having your Spell Model crumbling apart. You intend to sell your life to Selin?"

Merilung's face was faintly pale. Although he had stood against the old man's attack, the attack had definitely exhausted him. Moreover, this was only the old man's first attack.

Merilung was obviously familiar with the old man. This old man who had survived from the cruel "Slaughterhouse", albeit he could not bring out his true strength probably due to a hidden injury, was not someone Merilung could bear to underestimate.

During this revenge plan, the only person he had to take special caution was this black-robed old man in front of him!

"Merilung, cast your strongest spell. Hehe. The Abyss Fort is well-known for its Darkness-type spell. Bring it on. Enlighten this old man with your Darkness-type spell!"

The old man appeared to be familiar with the Abyss Fort as well and he knew Merilung still had something up his sleeve.

"Spell Model crumbling apart?"

Merlin who was watching the battle from afar wore an austere look. After listening to Merilung and the old man's conversation, he finally understood the secret of the old man.

Merlin had thought the old man was odd. Although having a strong Mind Power, the old man did not dare to use all of it as if he was afraid of something. It turned out that the Spell Model in the old man's Awareness was unstable and required him to stabilize it with Mind Power all the time. Moreover, he could not overuse his spell or the Spell Model might crumble apart.

This was also mentioned in old man Etha's Spell Manual. The Spell Model must be created with stability. If the Spell Model crumbled, the consequences would be great.

This mysterious black-robed old man had an incredibly strong Mind Power, comparable to the peak of those First-level spell Casters. However, he had to use up half of his Mind Power to stabilize the Spell Model. On top of that, he could not overuse his Spell Model.

A Spell Caster like him could never create a First-level Spell Model in his whole life, rendering him unable to become a First-level spell Caster forever.

There was always a hint of loneliness in the old man's gaze. It was surely because of this reason.

"Old man, if you want to die, I'll let you have what you want!"

Merilung's voice suddenly became hard to grasp. There was a rather vague wave of Element coming from him. Merlin had never sensed such Element before.

"Dark Mist!"

Merilung's voice seemed to come from all over the place. His figure disappeared into thin air in the blink of an eye. Merlin hurriedly searched for him using his Mind Power but to no avail. It was as if he had truly disappeared.

The place Merilung had stood at was engulfed in darkness. Merilung's figure was completely lost!

"DarkElement? This is the mysterious DarkElement…"

The black-robed old man appeared serious. Merlin could vaguely see the old man's figure then. However, as soon as the old man finished his words, the sky turned completely dark. In the blink of an eye, the old man disappeared without a trace.

"Disappeared again? DarkElement? Is this Darkness-type spell the Abyss Fort is well-known for?"

Merlin frowned. He was not familiar with the DarkElement at all so he naturally did not know how odd Merilung's Dark Mist was.

However, regardless of Merilung or the old man's disappearance, both were related at the "Dark Mist" released by Merilung without a doubt. Merlin believed that the black-robed old man who had survived from the "Slaughterhouse" would not be as simple as he seemed. He must have some solutions to this scenario.

All Merlin, Count Selin, and others could do now were to wait in silence.