Erin led Calvin towards the treasure vault of her palace.

Calvin's strength in the battle with Belcellion just now was enough to prove his worth, and Calvin later introduced the summoning card with a man and a dragon, proving his understanding of magical knowledge.

Therefore, Belcellion agreed to Calvin's request and gave away the Dragon Crystal.

The two of them came to a secret room, there were no guards around, there was a delicate huge lock on the door of the secret room, I saw Erin raise her right hand that emitted a soft light, gently brushed the huge lock, 'click', the huge lock has been opened.

Standing in front of the chamber, Calvin sensed a huge amount of magic nearby, and although he couldn't see the owner of the magic, he was sure that he would be staring at it in the annex.

"The defense is very tight, and it is actually guarded by dragons. Calvin said softly.

"You really have the ability to perceive magical power, but since it's a treasure house, it's normal to have quite a lot of guarding power. Erin replied with a smile and pushed the door open first.

The appearance of the secret room was more simple and neat than Calvin had imagined, and the boxes were neatly arranged one by one, so that there was no jewel to be seen, but Calvin was sure that the contents of those boxes would not be simple.

Perhaps there were too many treasure chests and too similar ones, and it took a long time for Erin to confirm her goal, and she came over with a simple ancient treasure chest and opened it in front of Calvin.

Suddenly, two crystals as clear as gems appeared in front of Calvin, the size of the dragon crystal was smaller than Calvin had imagined, and it was not as big as his fist.

"These two crystals used to be the Storm Dragon and the Flash Dragon, and now I'll leave them to you, please use them well. Erin solemnly handed the crystals to Calvin, who looked at them calmly, nodded solemnly, and received them into the spatial belt.

"Is there only these two?" Calvin asked suddenly, after putting away the crystals.

"It's only two, but what do you want so much for?" asked Erin, a little surprised.

Without answering Erin's question directly, Calvin took out his summoning card and shook it at Erin.

"You just summoned monsters from these cards to fight, does it have anything to do with the Dragon Crystal?"

"I made the cards myself, and the materials used to make them were just ordinary paper and paint, and the real essence was a magic circle hidden by paint. ”

"Magic Array, can you create such summoning beasts with magic arrays alone, isn't it too exaggerated!"

"It's a magic array that incorporates a lot of magic essence, using my own magic power to sacrifice and summon summoned beasts with the same magic power, and the purpose of my desire to get the dragon crystal is to use the crystal as a medium to make the summoned beast gain the power of the dragon. ”

"I see...... Indeed, the dragon's magic comes from that crystal, and you're right, but even if you succeed, you're the only one who can use the dragon's crystal......"

Erin's expression became heavy, and she looked down and didn't know what to think.

"Sure enough, my own research still needs to be continued......"

Calvin saw Erin's appearance, his lips moved subconsciously, but he still swallowed the words he almost said, he wanted to say another function of the dragon crystal, but after thinking about it carefully, implanting it into the human body to make it a dragon slayer magician is a use that was discovered almost four hundred years later, and if you say it now, the impact on history is too great.

"Queen, if my research is successful, I will need at least seven dragon crystals, because the number of summoned beasts I can drive at the same time is seven. ”

Hearing this, Erin jerked her head up, revealing a surprised face.

"What do you say? You can fight with seven summoned beasts at the same time!?"

Calvin nodded, his expression very serious.

"Seven summoned beasts, are they all at the level just now?"

"Only strong, not weak. Calvin replied succinctly.

Erin fell into deep contemplation, and it was a long time before she sighed faintly.

"Call me Erin in the future, and besides, I'll help you find out the Star Wizard, and if you can trust me, you can tell me the magic you're looking for. ”

"Thanks, Irene. ”

"No need to thank you for your strength, worthy of my favor. ”

On the same day, Calvin moved out of the hotel where he was staying, and Erin provided Calvin with a spacious house, food, clothing, shelter and transportation, Calvin only needed to study the Dragon Crystal and develop how to use it as soon as possible.

And Calvin did not slack off in finding the Star Spirit Wizard, although Erin said that he would help, but Calvin would not put all his hope on others, and released magical flying insects flying around Guladonov every day.

Calvin didn't tell Erin about the Eclipse Gate, after all, it might involve that Jelf, and he was afraid that Erin would deduce her origin from the Eclipse Gate.

After all, the only function of the Eclipse Gate is to travel through time and space.

As for the research on the Dragon Crystal, it has not gone so well.

Originally, according to Calvin's idea, he was trying to find a way to implant the dragon crystal into the summoning card, so that the summoned beast had the power to destroy the dragon like the second-generation dragon slayer magician, and among Calvin's strongest seven cards, there happened to be cards suitable for the two attributes of storm and flash, Gaia Drake, the knight of the earth and sky, and the blue-eyed white dragon.

It's just that the dragon crystal is so integrated that Calvin can't put it into the card at all.

Calvin thought about melting the dragon crystal, but doing so would definitely destroy the crystal, and Calvin couldn't be sure if the destroyed crystal would still work.

It's an endless loop, cards don't look like the human body, there is room to implant crystals, so Calvin decides to change his mind.

Since it can't be implanted, then directly make the dragon crystal into a card.

This is not the first time that Calvin has tried this, in order to prevent the explosion of the Tower of Paradise, which is infused with magical powers, he made the entire tower into the resurrection of the dead.

The Tower of Paradise is essentially a giant magic crystal that can be crafted into cards, and there's no reason why the Dragon Crystal can't.

As soon as he thought of it, Calvin didn't design a new card, after all, the knight and the white dragon two cards are very suitable for these two crystals, and their balance in all aspects is almost perfect, he plans to directly engrave the magic formation of the blue-eyed white dragon on the dragon crystal.

For a long time, the magic circle depicted when making the summoning card was portrayed by Calvin with his own magic power, and it was natural to use the same method to make it with dragon crystals.

And then the problem happened.

The last time he used the Tower of Paradise as a material, Calvin's magic array was carved into the entire crystal, completely changing the nature and form of the Tower of Paradise like a chemical reaction, but in the face of the integrated Dragon Crystal, his magic power could not cause chemical effects at all, and he could not have any effect on the Dragon Crystal.

The Dragon Crystal is like a perfect craft, there is no room for the artist to work on it again, Calvin can feel in the process of trying that if he insists on carving the magic in the crystal, the end of the Dragon Crystal will only be destroyed.

Calvin had been trying all sorts of things for a whole month, but there was no doubt that they all failed, and he had no idea what to do in the face of the Dragon Crystal.

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