Billions of layers of Poison, erupt!

Just as Qin Feng was frantically stacking Poison on the surrounding elemental spirits monsters…

Every two hours, a system notification would appear in his mind, stating that a skill of the highest grade had been disabled!

Initially, it was 'Rogue Fairys Blessing'.

Immediately after, it was 'Abyss Puppet Curse', which turned Qin Feng's Abyss Puppet Curse gray, temporarily disabling it…

This made Qin Feng temporarily unable to sense the puppet still grinding monsters in the Abyss World!

"It's a pity that although the puppet inherited the Deathwing Angel Bloodline, the monsters killed by the puppet only stack the puppet's 'Death Eulogy'."

"Otherwise, if I let the puppet kill monsters outside, I would stack Death Eulogy without limit…"

Qin Feng felt a bit regretful, but it didn't affect much.

The next skill to be disabled was 'Graceful Liberation'!

This was the fourth hour of the ninth day, and Qin Feng's third disabled skill.

After this skill was disabled, Qin Feng's damage instantly dropped by a large margin.

"Weak Point Attack correction plummeted."

"The probability of these bouncing Shadow Blades hitting a weak point is now less than thirty percent…"

Qin Feng watched, his heart bleeding.

When 'Graceful Liberation' was disabled, Qin Feng's overall average damage was directly reduced to less than one-third of his peak.

And in the sixth hour, Qin Feng's fourth skill was disabled, which was 'Blessing of the Death Goddess'!

Then came 'Bone Scraper Blade'.

Then 'Instant Extinction'.

Then 'Original Shadow Perception', 'Shadow Warp', 'Source of Superiority'…

In just 16 hours, a total of nine Immortal-grade skills of Qin Feng were temporarily disabled, causing his combat power to plummet!

At this point, under the suppression of over ten thousand times gravity, Qin Feng was almost unable to move, his deceleration was too high!

And then…

In the eighteenth hour of the ninth day, Qin Feng's Ancient-Grade skills also began to be disabled!

The first Ancient-Grade skill to be disabled was Killing Shadow!

After this skill was disabled, the Shadow Blades bouncing around the field rapidly decreased!

After all, although Shadow Blades could bounce infinitely, they couldn't hit the same target, so Qin Feng needed to continuously throw out new Shadow Blades to maintain sufficient monster-killing efficiency on the field.

So when Killing Shadow's five Shadow Clones were disabled…

Qin Feng's Shadow Blades could no longer keep up with the monster-killing speed.

Even more unfortunately, when Qin Feng survived to the tenth day, his Ancient-Grade 'Shadow Blade' skill was finally disabled!

At this point…

The entire field was clear!

The nine Calamity Spirits who had been watching until now finally felt that this challenge was about to end, because without Shadow Blades, Qin Feng would no longer be able to efficiently kill monsters and thus accumulate revival chances.

But at this moment.

These Calamity Spirits suddenly discovered…

The layers of green Poison damage on all the Calamity Spirits in the field had actually stacked to the point where they were losing hundreds of millions of health per second!

Before, when Shadow Blades were still on the field, they thought it was all Shadow Blade damage.

Now that the Shadow Blades were gone, they realized that the Poison, which they hadn't paid much attention to initially, had actually stacked to billions of layers?!

"Ah?"

All nine Calamity Spirits were stunned on the spot.

This situation didn't seem right!

"This is… Poison Dart!"

An assassin's initial skill, and its skill level was only 2, with very low base damage; even one or two layers of Poison couldn't cause any damage to elemental spirits.

However, it was precisely such a skill…

After stacking for a little over a day, billions of layers of Poison finally unleashed terrifying damage!

"Poison can spread, and as long as its layers stack up, the damage per second will be extremely terrifying!"

"It's just that the stacking of layers is a bit slow…"

Qin Feng couldn't help but think.

In fact, under normal circumstances, if there are enough monsters in the area and they are dense enough, it would only take a few minutes to stack Poison to billions, or even tens of billions of layers.

After the 'Poison Dart' skill evolved to Legendary, its upper limit is extremely high in area attacks, but it requires the targets to be sufficiently tanky and the number of monsters to be high enough.

Otherwise, the layers simply won't stack up.

Of course, for Qin Feng, the stacking of these layers was still a bit slow.

If he could kill them in one hit, would he need to stack poison?

If he didn't have other options now, he wouldn't rely on this skill…

The key was that among the elemental spirits on the field, there were many elemental spirits of the Poison Element!

These Poison Element elemental spirits had a buff aura that allowed all surrounding elemental spirits to eliminate half of their Poison damage layers per second.

Qin Feng had discovered this from the very beginning.

After all, his initial attacks all carried the Poison damage of 'Blessing of the Death Goddess', so he could observe the decay of his Poison layers.

Even so, Qin Feng still brought out 'Poison Dart', precisely because…

He had calculated that in this environment, the stacking layers of Poison Dart's poison would constantly increase.

"Poison transfers 50% of its layers to all surrounding enemies per second."

"The next second, all surrounding enemies will transfer 50% of the Poison layers back…"

"Therefore, in this skill, the stacking speed of Poison layers is exponentially related to the number and density of monsters."

"Assuming all monsters have the same Poison layers, with each enemy eliminating half of the Poison layers per second…"

"Then if a monster is surrounded by only 2 other monsters, its Poison layers will eventually stabilize at a constant value, neither increasing nor decreasing."

"If a monster is surrounded by 3 other monsters, its Poison layers will increase at a rate of 25% per second."

"If a monster is surrounded by 4 other monsters, its Poison layers will increase by 50% per second…"

Strictly speaking, this is a rather complex mathematical model.

And Qin Feng had already determined through observation over the past few days that the entire venue for this survival challenge was a hemispherical area with a radius of one hundred kilometers.

The number of elemental spirits in the known area.

The total volume of the known area.

Thus, the density of the elemental spirits could be determined.

Qin Feng easily calculated that within his Poison transmission range, there would be an average of 3-4 elemental spirits, which naturally meant that the Poison layers on the elemental spirits would continuously rise!

Therefore, after a full day…

Many elemental spirits in the area were all covered with billions of layers of Poison!

However…

Why else would one say this skill has low damage?

With Qin Feng's various Immortal-grade skills disabled, his damage plummeted, and even with billions of layers of Poison, it could only cause one or two hundred million damage per second…

"Fortunately, these elemental spirits, apart from some passive effects, do not actively defend, but rather attack with reckless abandon."

"Otherwise, if they had any dispelling skills above Legendary, I wouldn't be able to exploit this loophole."

Qin Feng sighed with emotion.

However, even if it was exploiting a loophole, it wasn't one that just anyone could exploit.

After all, the effect of Qin Feng's Legendary 'Poison Dart' was an evolution… others simply couldn't possess it!

Under these circumstances, the Poison layers on the surrounding elemental spirits were still continuously stacking. Although the aura effect of the Poison Element elemental spirits decayed half of the layers per second, the Poison spread even faster!

When all the Shadow Blades on the field disappeared.

The Poison damage immediately erupted, instantly killing several low-health elemental spirits within a second!