Proficiency Maxed Out, Grinding to Mortal Sword Immortal

The Grand Formation teetered on the verge of collapse.

"Give it one more push! We're almost there!"

A trace of relief appeared in the Myriad Phenomena Mansion Lord's eyes.

It had been far too perilous!

It was hard to imagine who could have stopped them here.

They hadn't even seen a single figure.

Yet they had already lost several Cult Master-level figures.

The others had all suffered serious injuries, too.

If they hadn't found the Array Eye in time, even more people might have died.

But just as they were about to succeed—

A mighty force instantly rebounded against them.

The torrent of magic power was enveloped by a powerful crimson force. In an instant, several Cult Master-level figures died horribly. These were Eighth Realm powerhouses, renowned throughout the entire Eastern Territory.

They were swallowed by the crimson force, with time for only a single scream.

"What's going on?" Black Stone Cult Master stared blankly.

By rights, striking the Array Eye shouldn't have caused such a backlash. Besides, they were on the verge of success.

They were just one step away.

The Grand Formation was teetering on the verge of collapse; it was almost in ruins.

And yet now—

It was as if Black Stone Cult Master had gotten them killed.

Several Cult Master-level figures had vanished in an instant?

Even a Ninth Realm powerhouse had suffered a backlash and been gravely wounded.

"The Array Eye changed. That's all." Yun Shu remained calm.

But in his mind, he quickly ran through the possibilities.

A few people dying was nothing to him.

Even if they were Cult Master-level figures, there was nothing special about them.

How could anyone break a formation without losing lives?

Only by repeatedly testing and failing could they find the best point.

Black Stone Cult Master truly