Hook Sling

This heavy metal contraption can be used to hurl a barbed hook at the surface of a solid object within 20 feet of you, latching onto it and pulling you toward the target. The hook can be hurled using a bonus action, and it requires an action to wind it back in before you can use it again. You can hurl the hook using only one hand, but it requires two hands to wind the hook back in. If the targeted surface has no lip to grasp or is otherwise too difficult for the barb to hook onto, the hook fails to latch onto it and pull you.