Tied Tongues

You attempt to thwart a creature’s ability to communicate about certain subjects. One creature that you can see must make a Wisdom saving throw. If you are in combat with the creature, it has advantage on its saving throw. On a failed save, the creature becomes charmed by you for the duration. The charmed target is incapacitated and unaware of its surroundings, though it can still hear you. If it takes any damage or is targeted by another spell, the spell ends, and the target is unaffected by the spell. While this charm lasts, you can prevent the target from being able to communicate in any form about certain topics, things, or events which it has knowledge of. This can range anywhere from a place, a person, a small detail, or crucial information. You must speak to the target to describe what it cannot communicate about, and it must be able to understand your language. The caster must be very precise when describing to the target what cannot be mentioned, and should attempt to verbally cover all loopholes that may make the target able to communicate about the unwanted topic. When spoken to about the forbidden topic, the target will temporarily lose all of its ability to communicate (speaking, writing, nodding) as long as the spell can sense the target is attempting to communicate about the topic, with a faint illusion of a chain appearing over the throat of the target when the spell is activated. The spell also prevents all attempts of prying into the mind, and if it senses an attempt being done to the creature, the creature prying into the mind takes 1d6 psychic damage on attempt. The target is also automatically unable to communicate about why they cannot communicate about certain topics, unless it is specified by the caster that they can. This enchantment lasts for 30 days on the target when casted and cannot be removed by any means. (6th level last 1 year, 7th lasts 10 years, 8th lasts 100 years)