Sympathetic Heart Stop

By first aligning with then clashing violently against the exact rhythm of your opponent’s movements, breath, and even heartbeat, your physical touch interrupts their life force.

A living creature you touch makes a Dexterity saving throw or takes psychic damage equal to 6d8 + your Wisdom modifier and is stunned until the end of your next turn. On a success the creature takes half the damage and is slowed until the end of your next turn instead of stunned. A creature immune to being stunned automatically succeeds on its saving throw. The effort of activating this maneuver drains you and you are rattled until the end of your next turn.