Spirit-Sealing Fulu (Greater)

Usage affixed to one undead creature

This classic fulu seals the void energy within an undead, freezing it in its tracks. Upon affixing, the target undead must attempt a DC 27 Will save or be Paralyzed for 1 round. On a critical failure, the undead is paralyzed for 4 rounds. At the end of each of its turns, it can attempt a new Will save to reduce the remaining duration by 1 round, or end it entirely on a critical success.