Armor (any one-handed melee weapon), common (requires attunement)
This prosthetic is able to switch between modes and contains modes for casual walking, for swimming, and for mountain climbing/athletics. Its specifications add 5 feet of movement to all movement types (except burrowing).
Once per long rest, the leg is also able to provide advantage on one dexterity saving throw.
An outfit made of pride silk weighs 4 pounds and costs 500 gp. If you aren’t wearing armor, your base Armor Class is 11 + your Dexterity modifier while wearing it.
Notes: Bonus: Speed (Walking), Advantage: Dexterity Saving Throws, Utility