When Grey had first activated the Soul Devouring Everlasting Bird, he had needed to consume a massive amount of souls and life energy before the technique could be activated. Yet even then, the Soul Devouring Everlasting Bird had still been incomplete, with only a portion of its essence residing within Grey.
This Ancient Technique was similar in that regard. However, the nourishment it required was entirely different.
Bizarre existences.
Moreover, it could not just be any ordinary bizarre existence.
Over the past few months, Grey had encountered several bizarre existences that would normally remain hidden from the perception of ordinary cultivators. Some of them were so well concealed that even his powerful divine sense had difficulty detecting them.
