A Quiet One. The stranger can take the Disengage action as a bonus action.   Been Everywhere. The stranger is immune to extreme conditions caused by heat, cold, wind, or environmental hazards that affect large areas.   Perfect Aim. Whenever the stranger is in combat and doesn't take an action during its turn, the first time a weapon it is holding is used in an attack, that attack deals additional force damage equal to the attacker's Charisma modifier. The stranger can take a bonus action and still provide this benefit.   Unbowed. Whenever the stranger must make a saving throw, it can choose to succeed. Once it does so, it can't do so again until it finishes a short or long rest. The stranger can take a bonus action and still provide this benefit.