Transmigrated as a Ghost

As Teivel's death magic spell washed over him, Marcus felt a slight tingling all over his form, but as he expected, being an undead it seemed that it had no effect on him.

At least that was how it was as first, but as the spell continued, he realized he had made a huge mistake taking this spell head on as a test.

'My clothes!'

Quickly the spell that turned any sort of organic matter to dust, destroyed the fibers that made up Marcus' enchanted clothes.

Luckily Marcus was still wearing his armor, so he was not running around completely uncovered, but he had just lost his expensive and convenient set of enchanted clothing.

On the other hand, Teivel was astonished to see that Marcus had escaped his death magic spell unscathed.

'No living being should have been able to withstand that without at least taking some damage. What the hell is he?' Teivel thought seeing that Marcus so far had been immune to everything he had done.

He had never seen anything like this before. Even most undead were not fully immune to this spell that destroyed organic matter at a molecular level.

Taking a moment, Teivel tried to assess Marcus further now very wary of this mysterious being that had infiltrated his prison that should have been impregnable.

Unfortunately, Teivel's problems were just beginning as he soon got a telepathic message from the vice warden that was most concerning.

'Sir, Great Knight Argus has just freed the other great knights and elite mages, and they are going on a rampage. They are continuing to free more and more prisoner, and many of the rebels have been released as well. We do not have the manpower to contain them for long. Without your assistance we are going to be overwhelmed soon.'

Tch!

Clinking his tongue, Teivel was becoming increasingly frustrated by what was going on, and quickly replied to his vice warden and said, 'Contact the capital and tell them to send Cibor and everyone else that they can. This is a plot by the rebels. They managed to sneak in an agent who I am dealing with now. Just keep the escapees stalled for a dozen more seconds and I will be over there.'

With the situation rapidly detreating, Teivel gave Marcus and annoyed look before lifting up his grimoire and opening it.

"I am afraid I do not have time to deal with you, so I will leave you with your executioner." Teivel said as his grimoire began pulsing with a very wicked black mana.

Not long after a black ichor began to flow out of the book and form itself into an insidious looking monster.

Looking at it there was no doubt in Marcus' mind that this was the most horrifying creature he had ever seen.

Even the ravenous abyss summoned by the tier five darkness magic spell was not as terrifying as this thing.

It looked like some sort of abomination with a long, split head that opened up to reveal dozens of rows of teeth that were dark as night and dripping with acidic salvia.

It also had four main legs it stood on that were ended with six long claws, and on the top of its body it had a dozen limbs resembling arms that were all different sizes, and in abnormal locations.

Along with that it also had five writhing tentacles each that ended with a smaller version of the creature's head.

But worst of all were the hollow abyss like eyes that had a dim yellow light in each socket and seemed to unleashing a chilling sense of absolute doom.

'What the hell is that thing?' Marcus thought seeing the creature that had escaped from Teivel's grimoire.

Tesia had not told him anything about this when she had divulged to him Teivel's abilities and equipment.

Unfortunately, even Tesia had not known about this grimoire that contained eldritch horrors, since Teivel had not wanted to expose it to his kindhearted sister.

Trying to appraise the monster that had just appeared, Marcus received a response that he never had before from this skill.

Instead of what normally happened where it displayed the information or gave a message that the skill had been blocked, Marcus instead received three question marks as if this creature was not even recognized by the system as existing.

"Dreadmouth. Kill him."

After it had received its order, the eldritch monstrosity that Teivel had summoned seemed to disappear, and Marcus did not even notice what had happened until the creature's mouth had slammed down shut over his torso.

Seeing that Marcus had gone down incredibly easily, Teivel could only let out an angry scoff since he himself had so much trouble with what he considered to be an insect.

Yet as he tried to warp away, he instead only shakily teleported a few feet before being shunted out and slamming into a wall.

'What the hell!?'

Having no clue as to why his teleporting had been disrupted, Teivel quickly realized that Marcus must have done something before being eaten. 

Except as he looked towards his summoned monstrosity, he saw that it was now looking around in confusion with Marcus no longer in its mouth.

"Whew that was close." Marcus said as he appeared a few dozen feet in front of Teivel.

He currently had hundreds of small puncture wounds all over his body that were leaking the grey mist that was his essence, but overall, he was not too terribly damaged.

Luckily, Marcus had been able to escape by going ghost and slipping away from the Dreadmouth as Teivel had called it, but he now knew that he was no match for this thing.

Still, he needed to stall Teivel for as long as possible and prevent him from quelling the escaped prisoners.

Of course, as soon as he showed up again the Dreadmouth charged towards him, but what the creature did not know was that Marcus had left it a present before escaping.

'Undefiled Sanctuary.'

Activating the talisman he had left behind, a golden glow quickly spread out over a large area and engulfed everyone in a warm and peaceful light.

"Crsaishrasch!"

Letting out an indescribable screech of pain, the Dreadmouth began steaming and writhing around, unable to be in the presence of the tier eight sacred magic spell that had just be unleashed.

Seeing this Marcus was actually a bit surprised because this went against the description that Tesia had given him of this spell.

It was supposed to create an inescapable zone that denied any sort of suffering.

People inside could not hurt each other, nor could they die even if severely injured. Along with that it was supposed to have a calming effect and could protect from any sort of outside attacks.

It truly was the perfect spell for someone with the blessing of pacifism that could not hurt anyone.

Except it seemed that this monstrosity was such an anomaly that its very existence must have been meant to cause suffering, and the undefiled sanctuary completely rejected.

Quickly the creature ran to the edge of the spell's area and tried to escape as it began dissolving and turning into smoke.

However, it was unable to get out of the sealed space, and fruitlessly scratched at the barrier until it turned into a cloud and was sucked back into Teivel's grimoire.