Lin Yuan carefully looked at the twenty bluestone crystals in the small bluestone bowl in the lock spirit space, which were half the size of a thumb's belly, and couldn't help but be quite amazed.

These half-thumb-sized aura crystals exhibit a very crystal clear texture.

There is a faint gas circulating in it, and when it is illuminated, it emits a less obvious colorful hue.

But if you don't look closely, these twenty aura crystals really look like some irregular broken glass crystals.

However, the value of aura crystals is beyond the reach of those irregular broken glass crystals.

Lin Yuan smacked his lips as he looked at the entire twenty aura crystals.

If it weren't for the fact that when the Mother of Blood Bath reached the second realm of mythology, that subtle wisp of heaven and earth grace fell on the Pure Land of Bliss of Mobius.

Instead, it was formed by condensing itself according to Mobiu's skill aura, which would take at least more than one hundred and forty days.

The premise of this 140-day is also the premise of sufficient supply of energy ore.

These aura crystal forests were far enough to raise any of his three fantasy spirit creatures to the level of a gold-level first-level fantasy transformation.

These twenty aura crystals could immediately cause a qualitative change in Lin Yuan's strength after they were used.

It's just that Lin Yuan needs to carefully consider which one of Lily, Yinyin and Yuansha will be raised to the level of a gold-level fantasy seed first.

Because no matter which one is promoted, which one is destined to become Lin Yuan's hole card.

Even Lin Yuan's fighting style had to be tilted towards this spiritual object or source item that had been promoted to a gold-level fantasy seed, so as to change it.

Especially after Lin Yuan knew that the strength of the Radiant Hundred Sons Sequence was not as simple as it had shown, Lin Yuan had a full sense of urgency.

Since Lin Yuan had already decided to participate in the competition of the Radiant Hundred Sons Sequence this year, he naturally would not back down.

Therefore, what Lin Yuan has to do is to raise his strength as soon as possible.

And these twenty unexpectedly obtained aura crystals were enough for Lin Yuan to immediately obtain a hole card at this time.

Lin Yuan thought that if he followed this situation, then by the time he participated in the selection of the Radiant Hundred Sons Sequence, it was very likely that he would be able to raise the level of the two fantasy spirit creatures to the level of the gold rank.

It can even raise the level of the Acid Bee Queen from the first level of the gold rank to a lot.

The gold-level first-level fantasy spirit creature already has the combat power of the platinum rank.

The combat power of the platinum rank is the most basic strength criterion for wanting to be shortlisted in the Radiant Hundred Sons sequence.

After some choice, Lin Yuan directly gave up Lily Lily, who had changed into a bronze rank tenth-level fantasy.

Raising Lily's level is nothing more than Lin Yuan's healing ability.

Although the healing aura profession is very rare and highly sought after, Lily Lily's advancement to a gold-level fantasy spirit object can also greatly increase Lin Yuan's healing ability.

However, this improvement in healing ability did not really help Lin Yuan to participate in the competition of Huiyao Baizi.

So Lin Yuan now has to make a choice between Yinyin and Yuansha.

After thinking for a moment, Lin Yuan gave up his plan to improve the tone first and promote the tone from the first-level fantasy of the silver rank to the first-level fantasy of the gold rank.

Although Yin Yin is Lin Yuan's strongest strength at the moment, even after Yin Yin is promoted to a gold-level fantasy seed, he can kill the platinum-level spirit object in seconds with a single blow of his bright body.

However, although such an ability is highly lethal, the error tolerance rate is extremely low.

If Yinyin can't directly determine the battle situation during the period of exerting his brilliant body, then Lin Yuan is likely to face defeat directly.

Furthermore, the Gold-Tier 1 Legendary Acid Etched Queen is somewhat of the same as the role that Yinyin can do.

The Acid Queen, and Tone are both high-burst single-target damage units.

After Yin Yin is promoted to the gold rank, becoming a gold rank fantasy spirit creature will indeed give birth to a gold rank skill.

But this gold-level skill was not something that Lin Yuan could decide.

Yinyin is still only at the Silver Level, and the combat system has not yet been fully determined.

Gold, platinum, and even diamond skills are still unknown to Yinyin.

Therefore, for Yinyin, the improvement obtained by the promotion level is a big uncertain factor.

Although the sound will only become stronger and stronger, Lin Yuan feels that the comprehensive source sand is more suitable for the improvement of his overall strength.

No matter how strong the sound becomes, it is the attack that is strengthened.

However, although Yuansha's attack improvement is not half of Yinyin's in any way, Yuansha pays more attention to defense and control.

After playing the first ladder promotion match with Cheng Hongfeng, Lin Yuan knew the importance of increasing his self-protection ability in battle.

And after playing the second ladder promotion match with Poison Meimei.

Lin Yuan regarded self-protection ability as more important, and even felt that for Reiki professionals, self-protection was the first element of the most important thing.

If Poison Meimei had the ability to protect herself, she could survive the blow of Yinyin's lore.

Then it is impossible for Lin Yuan to defeat Poison Meimei.

Although the source sand is comprehensive, the source sand is still only a source creature of the Bronze Rank 10 fantasy.

Although it is full of potential, it is still too weak in terms of strength after all.

However, what Lin Yuan had to do now was to enhance the level of the source sand of the source item.

Let Yuan Sha be promoted from the Bronze Rank 10 Fantasy Transformation to the Gold Rank 1 Fantasy Transformation.

Now that the decision has been made, Lin Yuan no longer hesitates.

Picking up the small bluestone bowl, he turned the amber crystal button-shaped source sand that had been hanging on his sleeve into a pile of yellow sand.

Then Lin Yuan picked up an aura crystal and threw it into the pile of yellow sand.

The yellow sand immediately centered on this aura crystal, forming a high-speed yellow sand vortex, quickly absorbing the energy in this aura crystal.

Source Sand is the most special existence among all the spirit creatures and source creatures that Lin Yuan contracted.

No matter how high the level of Source Sand is, it will not increase any skills, nor will it add exclusive traits.

Therefore, Lin Yuan estimated that after the source sand was raised to the gold level, it should enhance his existing exclusive characteristics.

Soon, the huge energy in the aura crystal was absorbed by the source sand of the Bronze Rank Tenth Grade Fantasy Transformation.

The level of Yuan Sha has also changed from the bronze level 10 fantasy to the silver level 1 fantasy change.

The source sand, which has become amber button again, has not changed significantly compared to its previous appearance, but has become more restrained and less noticeable.

At this time, Lin Yuan was promoted from the Bronze Rank Tenth Rank Fantasy to the Silver Rank First Tier Fantasy after the Source Sand was promoted.

I immediately felt that the restrained amber button-shaped source sand was shaking slightly, and cautiously and kindly sent a very vague spiritual request to myself. Read the latest chapter of "Royal Beast Evolution Merchant Claw Book House" for free for the first time.