"Interesting. They could actually embed witchcraft into beast-hide scrolls beforehand, then release it at any time when needed, without even consuming their own power. This method was worth learning from."
Inside the castle, Xiao Yun watched Isidore take out two beast-hide scrolls in succession and instantly unleash two Saint-level defensive witchcraft spells. A faint look of surprise appeared on his face.
This method was somewhat similar to the Sword Mark he had used back on the Nine Heavens Continent. By planting Sword Marks within his disciples, the marks would erupt with Xiao Yun's attack whenever they encountered a life-threatening crisis.
However, the requirements for Sword Marks were extremely high. Not everyone was capable of casting one, and Sword Marks could not be activated voluntarily. They could only be triggered passively when danger arose.
By comparison, this beast-hide scroll method was more efficient in actual use.
Still, Xiao Yun had also noticed the flaw of these beast-hide scrolls: the materials required were of an extremely high grade.
To make a scroll capable of carrying Saint-level witchcraft, one needed the hide of a Saint-level magical beast.
Xiao Yun's true body was the strongest Heavenly Emperor. If he wanted to make scrolls capable of carrying his ultimate techniques, he would need Demon Beasts at the strongest Heavenly Emperor level. Where was he supposed to find those? Wait—he could find them in the Primordial World.
As soon as Xiao Yun thought of the Primordial World, his interest was piqued. He had to learn this scroll-making method. In the future, when fighting enemies, he could just throw scrolls at them—he could crush them to death with sheer quantity alone.
Inside the illusion array, Isidore had no idea someone outside was watching the battle. After expending two scrolls, he had finally blocked the Earth Demon Bear's