Starting at 14th level, you can plunge a creature into an illusory realm.
As an action, choose a creature that you can see within 60 feet of you. It must make a Wisdom saving throw against your warlock spell save DC. On a failed save, it is charmed or frightened by you (your choice) for 1 minute or until your concentration is broken (as if you are concentrating on a spell). This effect ends early if the creature takes any damage.
Until this illusion ends, the creature thinks it is lost in a misty realm, the appearance of which you choose. The creature can see and hear only itself, you, and the illusion.
You must finish a short or long rest before you can use this feature again.