Deadly Lies

You reach out toward a creature, whispering a phrase unknown in any language. Your hand loses its substance and sinks into the target’s skull, groping through living thought until it finds the part of the brain that hides the truth.

The target must make a Charisma saving throw. On a successful save, the spell fails, and the creature is immune to this spell for 24 hours.

On a failed save, the target can’t knowingly speak a lie to you for the duration. In addition, for the duration, the target can’t attack you or target you with harmful abilities, spells, or other magical effects.

For the duration, whenever you ask the target a question, it must begin giving you a truthful, direct answer by the end of its next turn or take 2d8 psychic damage. A target that remains silent, delays, or attempts to deceive you in any way likewise takes this damage.

This spell does not force the target to speak, but it punishes refusal, delay, and deception.

If you ask for the same information more than once, even with different wording, the target immediately repeats the saving throw with advantage. On a successful save, the spell ends, and the creature is immune to this spell for 24 hours.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the psychic damage increases by 1d8 for each slot level above 3rd. If you cast it using a spell slot of 5th level or higher, the spell no longer requires Concentration.