Zone of Truth

You create a 15Ft sphere of anti-deception.
When a creature enters it for the first time, or
starts it's turn in it, it makes a charisma save.
When it fails, it can't deliberately lie. The caster
knows if they made the save. Affected creatures
know they're in the spell, and can avoid
answering, or evade the question as long as
they are in the zone.