Grapple Jet

The gnomes in the land of Grittirune are an inventive bunch, and when faced with the issue of traversing cities with the guardship, they developed means of "flight" without having to grant everyone access to flight spells they may not have. Thus was created the 3D maneuver gear, sometimes known as a grapple jet. It is a belt with a pair of grappling hooks and lines.

Those with proficiency in the Grapple Jet can unlock it's full potential, using a combination of extremely rapid hookshotting and its gas jets to swing around and about objects at high speed, provided there is an environment within 50 feet on either side to grapple on. Mechanically, this effectively grants the user a fly speed of 50 feet provided there are objects nearby the hookshot can penetrate, and the flying is limited to around grapplable objects +50 feet for the length of the rope. Also unlike normal flight, at no point is the user at rest and may not hover unless they are hanging from a ceiling or rappling down a wall. They must move their full movement (50 feet) each time. While maneuvering with the grapply jet, enemies attack of opportunities are rolled at disadvantage. A surface at least 10 feet high is needed to get airborne and proceed with the airborne gymnastics. For especially difficult tasks, an acrobatics check can be enforced.

If you end your turn while still suspended in the air, you must perform a DEX saving throw of 10 with proficiency and a saving throw of 16 without proficiency at the beginning of your next turn or risk losing control and flying into the ground or a structure. Standard falling damage of 1d6 bludgeoning per 10 feet traveled will apply.

You may use an action to make a ranged attack to shoot a grapple at a creature. This will do 1d4 damage on hit. You may then either use a bonus action to pull the target to you if it is your size class or lower, or use movement to pull yourself to the target if it is of a higher size class.