Juniper Sheriff 2014
CR 1/2 fey
Small fey, lawful neutral
Creature that enters space within 10 ft. of sheriff for 1st time on a turn or starts turn there: DC 13 Cha save or be unable to speak deliberate lie until it starts its turn more than 10 ft. away from sheriff. Creatures affected by this are aware of it and sheriff knows whether creature in area succeeded/failed save.
Knows if it hears a lie and can’t speak deliberate lie.
Remembers every creature that has ever spoken to it. If creature has spoken to sheriff and speaks to sheriff again while polymorphed or disguised sheriff has advantage on Int (Investigation) Wis (Insight) and Wis (Perception) checks to identify or recognize that creature.
Bonus Actions
Takes the Dash or Disengage action.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details