Unfortunately, Cao Banxian's paltry cultivation, together with those crudely made formation flags and ordinary offerings, could not unleash the true power of the Spider-Mantis Essence-Devouring Formation, a high-grade Mystic Grade secret art.
According to the jade slip, even the simplified Spider-Mantis Essence-Devouring Formation had its requirements.
To drive it to its utmost, at least a cultivator at the Foundation Establishment middle stage or above had to preside over the formation's core, holding a main flag refined from second-order grudge soul threads, supported by twelve sub-flags of the same quality.
Besides that, two Foundation Establishment middle stage cultivators had to spare no magical power in supporting the formation before there was any chance of unleashing its full potential.
If there were not enough people, there was another method-sacrifice all the flesh, souls, and magical power of two Foundation Establishment middle stage cultivators!
Combined with the might of the formation flags, this might summon a Netherworld Demon Spider whose aura rivaled that of a False Core cultivator!
And if it were the complete Spider-Mantis Essence-Devouring Soul-Slaying Formation!
Once fully activated, it could actually spawn a [Netherworld Demon Spider King] comparable to the False Nascent Soul realm!
Reading this, Qing Chen's heart shook violently, and even his breathing quickened.
"If I could set up the Spider-Mantis Essence-Devouring Soul-Slaying Formation, wouldn't taking the Condensed Jade Sect be as easy as reaching out my hand? Sooner or later, it would bear the surname Qing!"
But he also knew that, for now, this was nothing but a fool's dream.
Even for the simplified Spider-Mantis Essence-Devouring Formation, he only had one main flag refined from first-order grudge soul threads, along with five barely intact sub-flags.
Even if he caught a few more scapegoats and tossed them in as sacrifices, at the absolute most, he could only refine