Existential Dread

You remind a creature you can see within range that they are a small thing on a small rock floating through space, and in million years, everything they love and know today will be forgotten, as if it never happened. If the target can understand you, it must make a Charisma saving throw. On a failed save, the target takes 3d6 psychic damage and has disadvantage on attack rolls until the end of its next turn. On a success, the target takes half damage and suffers no other effects.

At Higher Levels: For every spell slot above 1st expended, you deal an additional 1d6 psychic damage.