Previously, Backup Energy 2.0 used a mathematical set approach, combined with time magic, to achieve the effect of rapidly restoring mana until his mana was full.
The cost was that it could only be used once a day and would cause a severe burden on his spiritual power and body. After all, to maximize the value of this spell, he would have to cast it twice.
Using other spells while simultaneously using Backup Energy 2.0 would double the drain on his spiritual power.
And during the process of being flushed with a large amount of mana, it would also place a great burden on his body and meridians.
So, when Lu Chenxing wanted to directly add spiritual power to it, allowing it to recover in the same way, he could clearly feel through the effect of Weaving that this crude method, while capable of successfully constructing the spell, would likely not be very effective.
It might consume even more spiritual power to successfully activate this spell, making it somewhat not worth the gain.
“Does it still need to pay attention to logic?” Lu Chenxing scratched his head a bit, because Backup Energy 2.0 itself was a spell that consumed spiritual power. Now, wanting it to help restore spiritual power again was a bit too much to ask of the spell.
So he decided to find a new method, pondering various possibilities until he thought of some things from his previous life, and suddenly his eyes lit up. He exclaimed in surprise, “That’s right! I can spend ahead of time!”
He just thought of how in his previous life, when he had no money and was too embarrassed to borrow from others, he would open a certain blue app and start using Huabei and Jiebei for “First Use, Pay Later” consumption, only needing to pay it back later.
Following this logic, he could completely use time magic to borrow mana and spiritual power from his future self! And he could remove the restriction of “stop when mana is full,” instead, as long as his body could withstand it, he could keep borrowing until he stopped, only then beginning repayment.
However, when he was in repayment status, both his mana and spiritual power would fall into a weakened state, and if he borrowed too much, the weakened period would also extend.
But judging by his current mana, spiritual power, and physical fitness, if he really needed to use this spell, it would most likely be a matter of life and death, so these side effects seemed insignificant.
As for the fluctuations of time elements, he could directly use Yin Power to conceal them, and since these occurred within his body, he wasn't afraid of others discovering them.
Finally, he gave this upgraded spell a name, called “First Use, Pay Later,” after which the Weaving effect flashed with light, indicating the successful establishment of the spell.
After solving his energy anxiety, Lu Chenxing began to construct the magic array according to his own design. He stood up and released mana and spiritual power towards the dummy in the training room, forming a circular light blue halo around it. Since it was only for testing, the range was not large, only about a dozen meters in radius.
The moment the halo formed, Lu Chenxing left a command, then cut off the spiritual power link, and then opened the All-Knowing Eye to observe the flow of elements.
【"World-Destroying Spear" series array, self-created, instant attack type, attributes light, thunder, fire, attached rule power quantity two, power prediction mid-fourth-tier.】
Then, under Lu Chenxing’s gaze, the elements of these three attributes within and around the array were rapidly drawn in. The originally light blue mana halo transformed into a mix of gold, red, and blue-purple colors, indicating that the mana was being compressed.
About three seconds later, a massive light spear phantom, entwined with lightning and fire, appeared above the array. Its tip pointed directly at the ground, then it suddenly plunged down, and the moment the lightning and fire elements made contact, a huge explosion erupted!
The display screen on the side immediately showed “mid-fourth-tier power,” which was completely consistent with the power predicted by the All-Knowing Eye.
This was still the version without Yang Power. If Yang Power were added, along with the slight boost provided by Magic Guide, the power of this spell would probably reach the peak of the fourth-tier!
If the effect of this array were brought into the Dark Secret Realm, it would definitely be no worse than the move he unleashed on that living dead person before! After all, both were special attacks against the dark attribute.
However, Lu Chenxing’s focus wasn’t here, but on another matter: “This magic array looks a bit shabby! Although it can be used, it really doesn’t have any array patterns at all, it seems a bit too special…”
He stroked his chin and thought for a moment, then made some changes, turning the single ring into a double ring, and then adding a long spear pattern in the middle of the ring, with the spear tip slanted downwards. Lightning was on the left side of the spear, and fire on the right.
Never mind whether the patterns on it were useful or not, at least now it looked like a magic array.
Then he released it again, and looking at the beautifully patterned magic array on the ground, Lu Chenxing nodded with satisfaction.
Afterward, he began testing the maximum possible range for the current array without affecting its power. He concluded that it could reach a radius of about fifty meters; any larger, and the array’s power could not be guaranteed not to decrease.
After the tests were complete, Lu Chenxing began testing the effect of multiple arrays being released simultaneously. With the boost from Spiritual Sense, he waved his hand, and more than a dozen light blue magic arrays, each about twenty meters in diameter, simultaneously appeared. Nearly a tenth of his total mana and spiritual power were instantly drained.
As more than a dozen massive light spears descended, amidst the roar of huge lightning and fire explosions, Lu Chenxing slightly frowned, because this time it took five seconds for the array to complete its attack!
“Each array cannot be too close to each other, otherwise they will compete for elements, causing the array activation time to lengthen!”
This was another instance where theory and practice deviated. Although the surrounding elements were almost inexhaustible, rapidly drawing a certain type of element in a short period of time could very likely create an “elemental vacuum.”
Although elements would surge back like sand to fill the vacuum, this would take some time.
Therefore, the array would fail to absorb enough energy, leading to a delayed activation.
As he adjusted, Lu Chenxing gradually adapted to instantly releasing multiple arrays and also understood that it was indeed possible to stack multiple arrays in the same spot, but the elemental power of each array could not overlap, otherwise, a delayed activation would also occur.
As for using the Element Condensation card within the array to fill the array first before releasing it, he stated that releasing the spell with a thought was still faster for him.
Moreover, Lu Chenxing keenly noticed that the spiritual power he had just consumed had already recovered by seventy to eighty percent, which made him feel a bit startled!
Logically, the depletion and overdrawing of spiritual power require cultivation or sleep to accelerate recovery. He hadn't expected the recovery speed to be so fast under the effect of Source of Spirit!
Furthermore, driven by the recovery of spiritual power, his mana recovery speed also greatly increased, and he had now recovered most of the amount he had just consumed.
This meant that unless he encountered a desperate situation requiring him to unleash hundreds of arrays at once, his spiritual power and mana would almost never run dry!