Diaz's Door of Despair

A silhouette of a door appears before a target of this spell, revealing their deepest fears when opened; the target must succeed on a Charisma saving throw or be charmed until the spell ends.

A charmed target immediately uses its reaction to open the door which will reveal their deepest fears and the target takes 3d8 psychic damage. While charmed by this spell, the creature is incapacitated and has a speed of 0. The target and the caster are the only creatures able to see what's behind the door.

At the end of each of the target's turns before the spell ends, the target must succeed on a Charisma saving throw or take 3d8 psychic damage.

The spell ends for an affected creature if it takes any damage outside of this spell's effect or if someone else uses an action to shake the creature to its senses.

 At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot above 4th.