Eadwülf's Flames of Inquisition

A curtain of divine flames bursts from the ground and surrounds a creature that you can see within range, evoking the memories of its misdeeds and transgressions. The flames can only be seen by you and the target, and it must make a Charisma saving throw. On a failure, the creature takes 6d8 psychic damage and has disadvantage on it's next saving throw against any effect that compels it to only speak the truth or that can read its thoughts. If the target succeeds, it takes half as much damage and does not suffer the additional spell's effects. Evil creatures targeted by this spell suffer an additional 2d8 psychic damage.