Spellbook - Winter Dreamer

Spellbook needed to learn Winter Dreamer.\n\n<Acquiring Class>\nMystic Muse \n\n<Skill Effect>\nPuts the enemy into a deep sleep\n\nSleep is not canceled by attacks for a certain period of time, and even after that, it is not released immediately after being hit, and the probability of being released increases by stacking each time they are hit.