Returning to the Fourth Battlefield

The secret art given by that strange Supreme had been converted into a spell by the system after he successfully cultivated it.

Its name was: Nail-Head Seven Arrows!

This thing...

Shouldn't it have been a treasure?

And one of the most famous treasures in Investiture of the Gods at that!

How did it end up connected to a spell... Wait, among the Thirty-Six Heavenly Spirits, there also seemed to be a divine ability called Nail-Head Seven Arrows?

Chu Yuan scratched his scalp. In the end, he decided that black or white, it was fine as long as it worked!

This spell centered on the laws of information and curses;

However, Chu Yuan felt that it probably also involved the order of causality;

It was simply that he did not yet have the ability to construct an order of causality...

The straw effigy in his hand corresponded to a Demon Race Sovereign he had encountered on the Fourth Battlefield;

It had been constructed using the aura of that being's soul, along with other information.

He could sense that, somewhere in the unseen, it had formed a connection with some unknown place...

As though it were drawing something in.

After observing it carefully for two days, Chu Yuan discovered that the effigy's face was becoming increasingly similar to that Demon Race Sovereign's!

Yet it also seemed to have drawn the other party's attention;

A law of information followed the fluctuations here, but... it failed to detect anything at all.

Chu Yuan brought out the Blood-Transforming Blade, shrank it to the size of a needle, and stabbed it into the effigy's brow!

The straw effigy suddenly shuddered, its entire body curling up as agony appeared on its face...

Yet it actually did not die?

Chu Yuan remembered that the Nail-Head Seven Arrows Book