Su Bai first found a floating asteroid and moved a fire spirit crystal vein on it. He let Little Tyrant sit on the vein before taking out the potion.

This was a purple transparent potion, which looked extremely viscous, just like tahini without water.

"Here. Eat this, but you have to be careful. The energy contained in this potion is very powerful, even though I only used one-third of the Blazing Horse skeleton. The spiritual power contained in it is enough for you to evolve into a monarch."

He handed the potion to the dino and cautioned it. Blazing Horse was a monster beyond the sovereign level before its death. Even if most of the spiritual power in its bones had dissipated over the years, it still had a boundless formidable power for the dino.

"Roar~" I understand~

Little Tyrant took the potion, shook it using its claw, and then directly swallowed the entire bottle. It even swallowed the test tube.

Su Bai: "…"

It was already too late to complain, for the spirit of the potion leaked, and its temperature soon reached four or five hundred degrees. It continued increasing, and he could only take the elf and the other pets away first.

"Roar!"

When they were one kilometer away from it, the dino roared. Although sounds could not be transmitted in the starry space, the spiritual fluctuations were still very obvious.

Following this roar, Little Tyrant first transformed into a complete body and turned into a huge monster more than one hundred meters high. This was a complete Purgatory Fire Thief.

That ferocious and violent look revealed its own strength. It seemed capable of burning mountains and boiling seas with every gesture. It looked capable of destroying worlds, too.

With the volatilization of the potion power and the detonation of the fire crystal vein's spiritual power, a fiery-red light cluster gradually enveloped its body.

For a time, only this burning fire was left in the vast space, exuding violent light and heat like a star.

Although he could not see the dino, he could also feel its aura being strengthened slightly.

Ah Bai, there's a situation in front. The movement of Little Tyrant's breakthrough has attracted some monsters in the nearby void. They are approaching our direction. Planet Eye suddenly issued a report.

Su Bai frowned. There was no light in this Abyss Star Territory, so the light and heat being emitted by the dino's breakthrough inevitably attracted many monsters.

"Don't worry; tell me if there's a particularly strong breath." He instructed Planet Eye. Little Tyrant had just sent a telepathic message that it did not need his help to deal with those things.

As the fireball on its side grew bigger and bigger, some of the attracted monsters arrived. These new arrivals then launched attacks to the fireball one after another while they continuously devoured the spilled spiritual power.

Although there was no reaction from the dino, the fireball surrounding it was still burning, and its breath was still rising steadily.

As time went by, more and more monsters were attracted to the aura, and they soon formed a circle around the sphere of fire and attempted to devour it.

Like a Dyson ball surrounding a star, they formed a tight formation around the dino. They would swallow the pure fire spirit whenever it spilled.

Ah Bai, is this really alright? Purple Jade asked, a little worried. After all, Little Tyrant was its first younger brother.

"Don't worry; the show is about to start." He laughed.

As soon as his voice fell, a flame lightwave spread around the dino. Wherever it went, be the one in its path a monster or a meteorite, it would shatter and destroy them.

Then a pair of huge wings burning with flames appeared in the dark backdrop.

Two red lights shone to reveal Little Tyrant's eyes.

At this moment, the dino's size and height had reached the horrifying level of a thousand meters. Its body was covered by dark armor, with lava-like lines on it. Little Tyrant had a black exoskeleton, which looked like a spear at the joints, and the mixture of flame and death around its body seemed to be the aura of a Purgatory King.

It had now officially evolved from a Purgatory Fire Thief to a super-rare monster, a purgatory overlord, the Lava Killer!

"Roar!"

It uttered another silent roar, and the surrounding spiritual power of the fire attribute flew backward and merged with the dino. The flame seemed to have seen its master. The dino broke through a bottleneck again, and its size skyrocketed to a height of two thousand meters. It directly broke through to the monarch grade.

It was not surprising that it was promoted to the monarch grade. After all, the spirit crystal vein was prepared for its breakthrough.

Once its aura had stabilized, the dino flew directly toward Su Bai with large strides. However, the pitiful asteroid under its feet, which was already overwhelmed by its weight, directly broke apart with nothing left intact.

"Roar~" Ah Bai, I've successfully evolved and broken through to the monarch grade~

Little Tyrant flew to his side and shrank to two meters tall, its flame wings disappearing at the same time.

It did not seem any different, and only its breath felt stronger.

"Good job!" Su Bai nodded in satisfaction; it was as he expected.

"This is a diluting potion made by the bones of the Blazing Horse. It can stabilize your realm."

He took out a bottle of light red potion and handed it to the dino.

"Thank you."

Little Tyrant found a place to sit down, then it raised its head and drank the potion.

Su Bai also used his pet interface to check the dino's detailed information.

[Name|Race]: Lava Killer|Monster

[Gender]: Male

[Level]: Low-level monarch

[Attribute]: Fire, earth, undead

[Features|Passive]: Lava Purgatory, Immortality (the body of the undead)

[Skills]: Fireball, Flying Stone, Bite, Death Crash, Multiple Tail Strikes, Ripped Claws, Defeated Fireball, Fire Jet, Earth Hammer, Death Cocoon, Fire Theft, Killer, Lava Wings (The flying ability of life monsters has a low cost and can exist for a long time.)

[Restriction]: Wood, metal, water, blood, curse.

[Weakness]: Water

[Evolutionary direction]: Little Tyrant — Tyrant — Purgatory Fire Thief — Lava Killer — Purgatory Tyrant — Starry Lava Eclipse

[Introduction]: Lava Killer is a super-rare monster. It is the most difficult evolution result for a Purgatory Tyrant and is one in ten thousands. Its successful evolution is the product of the right timing and place.

It is already the absolute purgatory overlord. Faced with the general five-stage evolutionary monsters, such as the Sand Tyrant, Purgatory Fire King, et cetera, it can easily defeat them all. In particular, its Fire Theft and Killer skills were the nemesis of all fire-type monsters.

*****

Looking at the rich data panel of the dino, Su Bai could not help but sigh. Now, it could not be regarded as completely invincible at the monarch grade and was capable of being undefeated.

In retrospect, it did not seem like a long time since it hatched, and it seemed like it was only yesterday that it was still gnawing at everything.

"Ah, I can finally feel some safety!" Su Bai exclaimed.

Before he could finish speaking, Planet Eye suddenly spoke. Master, there's a group approaching at a very fast speed. They're expected to arrive at our location in ten minutes. It should've been attracted by Brother Tyrant's breakthrough.

"?"

Su Bai frowned.