The sealed dome-like icy barrier created by the Level Four Unfettered Ice Fiends by their sacrifice was suddenly engulfed in darkness. It wasn't ordinary darkness. Even one's senses couldn't pass through this darkness, quickly meeting with the fate of being extinguished into absence.
The multitude of Level Three and Level Four Immortal King Unfettered Ice Fiends that entered this dome to kill a lone man was frozen in place, unable to even move. Their bodies were rattled by primal fear encroaching on their senses.
They all froze without a single movement, unable to even twitch. No matter how the two Level Three Unfettered Ice Fiends struggled, they could see nothing or hear nothing. However, they only felt something cave their necks, and the next thing they knew, their consciousness was wiped out immediately.