You create a magical zone that guards against deception in a 15-foot-radius Sphere centered on a point within range. Until the spell ends, a creature that enters the spell’s area for the first time on a turn or starts its turn there makes a Charisma saving throw. On a failed save, a creature enters the area's effect. You know whether a creature succeeds or fails on this save. With a bonus action you can change the zone between Truth or Corruption. When you change the quality of the area Charisma save is not repeated. Spell is indistinguishable from Zone of Truth unless an Intelligence check is succeeded against your spell save DC. The observer would notice waving of the aura of the zone.

Truth An effected creature can’t speak a deliberate lie while in the radius.An affected creature is aware of the spell and can avoid answering questions to which it would normally respond with a lie. Such a creature can be evasive yet must be truthful.

Corruption An effected creature can’t speak a deliberate truth while in the radius.An affected creature is aware of the spell and can avoid answering questions to which it would normally respond with a truth. Such a creature can be evasive yet must tell lies.