During the first wave of attacks, Wu Yuan had used only the Dream World to unleash the simplest Spirit Soul attack, testing whether he could crush his opponents with sheer power.
The eight rulers' clone bodies and source bodies were only at the second or third level of the Ruler Realm, and none of them had innate spirit treasures for Spirit Soul defense.
So, with a single thought, Wu Yuan had annihilated them.
The two Immortal experts, however, had clone bodies with only fourth-level Ruler strength. Yet under the influence of the complete Dao's origin, their willpower was far stronger. Most importantly, both of them carried innate spirit treasures that defended against Spirit Soul attacks.
Naturally, they could withstand Wu Yuan's simple attack.
"Can you withstand the Myriad Worlds Reincarnation Tribulation?" Wu Yuan unleashed his strongest killing move.
He had refrained from using an Eternal Secret Skill at first because he wanted to test his current strength.
Suppressing them with the Dream World was like an Eternity Expert crushing a River Life with vast Mana—a direct attack of overwhelming power.
Besides, Spirit Soul attacks could not be used without limit. The more powerful the Spirit Soul Secret Technique, the greater the strain on one's mind and Spirit Soul. They consumed mental energy.
It was just like source power and Mana: once they were depleted in battle, they could only be replenished slowly. Mental energy worked the same way.
"Whoosh!" The Spirit Soul attack moved faster than the fluctuations of space and time, instantly engulfing the two Immortal experts.
"Hold on!"
"Resist!" The two Immortal experts fled desperately. The moment they were hit, a terrifying wave of Spirit Soul power crashed directly into their minds and Spirit Souls.
A flicker of fear first crossed the two Immortal experts' eyes. Then their