C566 The Trump Card of Greyson

"What?!"

Greyson's eyes widened as he carefully sensed the air. He realized that a large portion of the Innate experts' remaining power had already been lost. Moreover, Mckay's condition had also recovered quite a bit.

Greyson cursed himself for being stupid, but now was not the time to blame himself.

He roared and activated the killing formation that he had set up in advance.

"Kill formation