The creature can paralyze with a mere penetrating gaze, unless a WIS saving throw with a difficulty of 15 is successful. The paralysis lasts until the creature dies, or until the paralyzed succeeds on a WIS saving throw, the difficulty decreasing by one point per turn or if the creature moves away from 40 meters. A paralyzed who has freed themselves from the grip of the paralyzing gaze can no longer be affected by the creature that affected them.
Evolution
Level 2: WIS saving throw with a difficulty of 16 is successful
Level 4: WIS saving throw with a difficulty of 17 is successful
Level 6: WIS saving throw with a difficulty of 18 is successful
Level 8: WIS saving throw with a difficulty of 19 is successful