Rope Arrow
This arrow has a rope magically embedded in its shaft. When shot at a location or object, it will securely attach the rope at the impact point, leaving the wielder holding the other end (the rope is 50ft long).
If the target is a creature, the rope wraps around them and attempts to restrain them. On a hit, the attack deals normal damage and the target must make a Strength saving throw (DC 14) or become Restrained. A creature can use an action to attempt to free itself or another creature within 5 feet of it by succeeding on a DC 14 Strength check.
Once shot, the arrow becomes normal rope.