Telepathic Communication

When you gain this feature, you can communicate telepathically with any creature you can see within 30 feet of you. You don't need to share a language with the creature for it to understand your telepathic utterances, but the creature must be able to understand at least one language.

You may maintain an open telepathic link with the person you last used this with for one day.  At the end of the day (or at either person's willing) the link ends.  If this is used on another creature, the previous link ends.  Distance doesn't matter, but if you leave the ethereal plane, someone casts Dispel Magic against you, or you are Charmed, Frightened, Paralyzed, Incapacitated or Unconscious, the link will end.