RutterkinMedium fiend (demon)
Crippling Fear. When a creature that isn’t a demon starts its turn within 5 meters of three or more rutterkins, it must make a Difficulty 10 Will saving throw. The creature has disadvantage on the save if it’s within 5 meters of six or more rutterkins. On a successful save, the creature is immune to the Crippling Fear of all rutterkins for 24 hours. On a failed save, the creature becomes frightened for 1 minute. While frightened in this way, the creature is restrained. At the end of each of the frightened creature’s turns, it can repeat the saving throw, ending the effect on itself on a success.
Bite. Melee Weapon Attack: +4 to hit, reach 1 m. Hit: 12 (3d6 + 2) piercing damage. If the target is a creature, it must succeed on a Difficulty 13 Fortitude saving throw against disease or become poisoned. At the end of each long rest, the poisoned target can repeat the saving throw, ending the effect on itself on a success. If the target is reduced to 0 health while poisoned in this way, it dies and instantly transforms into a living abyssal wretch. The transformation of the body can be undone only by a wish spell. (See notes)
No concoctions, maneuvers, or spells
All creatures in this system should have maneuvers or spells. You should add some maneuvers or spells to this creature. If you do so, please make a suggestion on github so I can finish adding maneuvers and spells to all creatures via https://github.com/mlenser/kryx-rpg-issues/issues/9.