Trade Good

Uncommon Requires Attunement

A rune of layered circles with a pale green light flowing through them.
  Passive Effect. When marked on armor or an item, an attuned wearer grows 1 foot, counts as one size larger when determining your carrying capacity and the weight you can push, drag, or lift. When marked on a weapon, the weapon grows larger when wielded by an attuned wielder and gains the heavy property if it doesn’t already have it (losing the light property if it has the light property).
  Active Effect. While attuned to an item with this rune, you can use that item to cast enlarge/reduce as a bonus action without expending spell points. Once a rune’s power is used, the rune’s active can’t be used again until the next dawn.