4th-level Evocation (ritual)
Casting Time: 1 minute
Range: 120 feet
Components: V, S, M
Duration: Concentration, up to 1 hour
You conjure a thick shadowy fog that obscures moonlight within the area, creating an effect similar to a lunar eclipse. The darkness spreads from a point you choose within range to fill a 60 foot radius sphere for the duration. A creature with darkvision can see through this darkness and both magical and nonmagical light can illuminate it, but neither cancels the other effects of the spell.
While within the affected area, lycanthropes lose their damage immunities, and must make a Wisdom saving throw every round or revert to their humanoid forms. In addition, lycanthropes attempting to assume animal or hybrid form within the affected area must make a Wisdom saving throw to do so.