Death Visions

You tear into the mind of the target and manipulate the target’s self-perception, forcing them to witness a cascade of vivid, personal visions of their own death, failures, last breaths, and traumatic attacks, layered atop one another.

The target must make a Charisma saving throw.
On a failed save, the creature takes 4d10 psychic damage and is incapacitated until the end of its next turn as the visions overwhelm its senses of reality.
On a successful save, the creature takes half as much damage and suffers no additional effects.
A creature immune to being incapacitated instead takes an additional 1d10 psychic damage on a failed save.
At Higher Levels.
When you cast this spell using a spell slot of 4th level or higher, the psychic damage increases by 1d10 for each slot level above 3rd.

If the target succeeds their saving throw, the caster receives a rebounding psychic blast, dealing 1d10 psychic damage. The caster can only take this damage once a day.