Extending Staff

Staff, common

While holding this staff, you can use a bonus action to cause it to magically become 5, 10, or 15 feet long. At 5 feet long, this staff can be wielded as a magic quarterstaff. At 10 feet long, the staff also adds 5 feet your reach when you attack with it, as well as when determining your reach for opportunity attacks, but you have disadvantage on attacks with it against a target within 5 feet of you. At 15 feet long, you can use it to add 10 feet to your running long jump or high jump. When you do so, you must succeed on a DC 10 Strength (Athletics) or Dexterity (Acrobatics) check or fall prone instead.