Reincarnation Of The Strongest Spirit Master

William created another group of masters, who were tasked to take care of any escaping outer world masters. This group had to act fast, or else the escaping masters would create more troubles than expected.

It just needed a few waves of masters to get delayed for other outer masters to escape the formations. So, he made sure to pick a few of the strongest masters in the firefighting group.

A third group would deal with the entrapped outer world masters. This group had to be brutal, using deadly attacks and techniques. To make sure things would be quite good, William started to make different augmenting formations of his, the same type Fang was obsessed with.

These formations depended entirely on materials from the outer world. But this wasn't a problem anymore. After days of gathering these materials from the underground city, William had more than enough.

Fang acted as the leader of this group, while Sloth acted as the leader of the firefighter group. As for the group controlling the formations, William entrusted his friends and guild top masters in doing so.

After all, the scope of the formations and the upcoming war was expected to be huge! He wouldn't be able to control things himself, nor selecting a few friends would help either.

As he prepared all this, he knew everything was ready. "Now we wait," he said to his friends, "just notify me whenever an activity happens at the portal."

Activating the portal wasn't a one second action. Signs would appear minutes before the activation of the portal, like ground shakes and lights flashing all over the underground city.

Such remarks were hard to miss, and William made sure to teach them to his guild masters and others. Those who accompanied him before when they raided Sara's mother force easily grasped these signs. As for others, they had their imagination to rely on.

William decided to retreat and try something new. He had little time to experiment, but this was a good chance to test a new theory he had in mind.

During all his journey in this world, he depended upon the explosive arrows for a great deal of battles. These were very impressive when dealing with a mass number of enemies. They were also the first thing he invented in this world. But he didn't evolve it for a decent amount of time.

And now it was the time for him to make a good amount of a new version of these arrows.

"I have a good amount of outer world materials," he muttered to himself, "all I need now is to try making as much as possible from them."

William knew he could make a good number of arrows using these materials. It would be easier as well. After all, his knowledge about explosive arrows came from the outer world.

But that wasn't practical in the long run! The number of materials he got wasn't low but wasn't that endless either. "I hope I find something of value in these rings, hehehe!"

He didn't just rely on the materials gathered from Lara's underground city. He had thousands of rings, the ones that his guild acquired after fighting against Sara's mother forces twice so far.

He went through the content of these rings before in a haste. He found tons of materials, weapons, elixirs and potions there, even scrolls of techniques were found as well.

Yet he didn't intend to use these until now. The techniques weren't of value to him. He just carelessly went through their content, without many expectations. He was sure the knowledge he had from his previous life was far bigger than anything he'd find in these useless scrolls.

He started to check the materials and arrange the ones he'd need in a separate ring. He found a great deal of materials in these rings, and many of these could even be used in his augmenting formation.

"I can even make lots of stuff using these materials, those masters were quite generous, hehehe," William knew that before taking off for a long adventure, masters in the outer world used to pile up a shitload of materials for future uses.

Materials could be used in strengthening and repairing their weapons. They also could be used by any alchemist in their group to make more potions and elixirs. And that explained why there were tons of materials, low number of spirit crystals.

But these spirit crystals held a special importance and value for William. "They came from the outer world, meaning they got the higher and more purified spirit power from that world…"

He looked at the one crystal he got out in a hungry way. The crystal didn't look much different than the crystals from this world. But he was confident the value of absorbing its spirit power would outweigh training for weeks here, even months!

"Tsk! It can't survive for longer than a few minutes," but after taking the crystal out, a rich cloud started to emanate from it. The difference between this world spirit power concentration and purity made it impossible for this outer world crystal to maintain its shape and content.

Spirit power kept dissipating from it, and in five minutes it turned into pure dust, "I need to make it extremely efficient to use these crystals before taking them out," William thought, while going through lots of spirit power concentrating formations in his mind.

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He wanted to use these crystals to train himself and others he'd select to go with him from this world to the outer world. Using this crystal for a group of people would lower its effects, but it'd make it much faster to absorb the spirit power before the world here digested it.

Going through the various rings he had, and seeing how scarce the crystals there were, made him think of Sara's mother. "I'm sure she has tons of these, but…"

He knew trying to negotiate with her for such trade would be impossible.