Curse of Yondalla

The Curse of Yondalla is an especially powerful abjuration/alteration spell, granted only to followers of the hin deity Yondalla and reserved only for use against creatures guilty of destroying a halfling community or slaying innocent and defenseless halflings.

Effects

When cast, any creature or person affected by the spell was stunned and, over the course of the next minute, reverted to a state of infancy, first slowly and then faster. Undead creatures without any sort of divinity were immediately destroyed while extraplanar creatures were banished to their home plane and unable to return for up to 100 years.

Use

The resulting children are then brought up by a halfling community or the priest who cast the spell and taught to respect halflings. If the child is one of an inherently dangerous species, it is sent to foster parents who will be able to handle such a creature and raise it to have morals and ethics. The only way to reverse the effects of this spell is for the cleric who cast it, or one more powerful than they, to cast Remove Curse on the infant. Otherwise, only Wish can dispel the effects. Destroyed undead creatures can also be brought back, but a banished outsider similarly requires a successful Wish spell or some form of divine intervention to return to Toril.