823 Advantages Outweigh Disadvantages, Time Assist Luck

Time assist luck increased one's luck without expending one's own lifespan, but it had two big disadvantages.

First was the backlash of the remnant souls. Because of the immortal killer move, the remnant souls become extremely fierce, and in the dangerous battle of souls, one could not use any soul path methods and had to rely on their own soul to battle. Thus, even soul path Gu Immortals often suffered severe damage to their soul after the battle of souls.

Second was that time assist luck could only be used once a month, and this related to the amount of time experienced by the immortal body.

What was meant by the time experienced by the immortal body?