Potion very rare
This potion appear to all senses as a Potion of Mind Reading. However the true effects are revealed after consumption. If you drink this potion, you must succeed a DC 16 Intelligence saving throw or lose your ability to filter what you say. Instead, you will say aloud whatever you are currently thinking, consciously or subconsciously. You are unaware of the fact that you are speaking aloud, unless it is made obvious to you by another creature.
As a side-effect of this potion, no other creature can tell if you are lying nor can another creature force you to tell the truth. If you enters or are placed in a Zone of Truth, you can continue to deliberately lie. This potion’s effect lasts 12 hours.