Book: Deep Magic: Volume 1
Page #: Roll20 VTT, I am not sure of the page number.
4th-Level Illusion
Casting Time: 1 action
Range: 120 feet
Components: V, S, M (a crow’s eye)
Duration: Concentration, up to 1 minute
You amplify the fear that lurks in the heart of all creatures. Select a target point you can see within the spell’s range. Every creature within 20 feet of that point becomes frightened until the start of your next turn and must make a successful Wisdom saving throw or become paralyzed. A paralyzed creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Creatures immune to being frightened are not affected by night terrors.
The Question: In comparison to Hold Monster a 5th level spell and Power Word Stun an 8th level spell, Night Terrors seems quite powerful. It is a 4th level spell that is an area of effect with a 20ft radius that automatically frightens a creature and is capable of paralyzing multiple creatures in that radius if they are frightened. It works on any monster or humanoid that can be frightened including undead creatures. Was this spell really supposed to be a 4th level spell? To me Night Terrors seems like a pretty solid 9th level spell.