Snake Spell

Snake Spell (뱀의 주술, Baem-ui jusul) is a spell used by Yool. It takes the form of two white snakes dangling from his hair accessories. Upon activation, a snake opens its mouth and stretches from Yool's hair, turning red as it bites its victim. When its fangs pierce the skin, the snake spell injects a poison that will paralyze and kill its target.

Yool use this spell to poisoned Yeon Yihwa and Hong Danhwa. This spell does not seem to work on Baam.