A wrist mounted grappling hook. As an action you can fire your grappling hook which carries a 50 ft rope. It automatically latches on to a point within range of your choice. Once in place, as a bonus action you can pull yourself towards the hook. 

Alternatively you can detach the hook, which will then function as a regular rope, and grants advantage to Climb checks made by creatures using the rope. The hook can be reattached as a Bonus Action.

The grappling hook can support up to 500 pounds. The rope has AC 20 and 20 hit points. It regains 1 hit point every 5 minutes as long as it has at least 1 hit point. If the rope drops to 0 hit points, it is destroyed.

Notes: Advantage: Athletics, Movement, Utility, Exploration