Rend Mind

You can sweep your Psychic Blades through a creature's mind. When you use your Psychic Blades to deal Sneak Attack damage to a creature, you can force that target to make a Wisdom saving throw (DC 8 plus your Dexterity modifier and Proficiency). If the save fails, the target has the Stunned condition for 1 minute. The Stunned target repeats the save at the end of each of its turns, ending the effect on itself on a success.

Once you use this feature, you can't do so again until you finish a Long Rest unless you expend three Psionic Energy Dice (no action required) to restore your use of it.