Death Gaze

Your pupils reshape to resemble skulls. When a creature starts its turn within 30 feet of you, you can force it to make a Constitution saving throw if it can see your eyes and you can see it. If the saving throw fails, the creature takes 6d8 necrotic damage and is incapacitated until the start of its next turn.

A creature that isn’t surprised can avoid the saving throw by averting its gaze at the start of its turn. It takes the normal penalty for attacking an unseen target if it attacks you before the start of its next turn.

If you meet your own gaze through a reflection, you must also make the saving throw.