Master Machinist's Marvelous Mallet

This immaculate silver hammer is polished to a mirror finish. You gain a +1 bonus to attack and damage rolls made with this magic weapon. The weapon has 7 charges and regains 1d6 + 1 expended charges daily at dawn. As an action, you can touch an object with the hammer and expend 1 of its charges to cast the mending cantrip from the hammer on the object. Casting mending in this way affects an area up to 5 feet on a side, instead of 1 foot. Alternatively, you can expend 3 of its charges as a bonus action while touching a creature’s armor with the hammer to temporarily enchant it. The enchantment lasts for 1 minute and grants the armor’s wearer a +1 bonus to its AC in addition to the armor’s normal bonus to AC, if any. A creature can only be affected by one of these enchantments at any time.