Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage and if the target is a creature wearing wooden armor, carrying a wooden shield, or in possession of a wooden magic item that improves its AC, it must make a DC 13 Dexterity saving throw. On a failed save, one such item worn or carried by the creature (the target's choice) magically deteriorates, taking a permanent and cumulative ?1 penalty to the AC it offers. Armor reduced to an AC of 10 or a shield or magic item that drops to a 0 AC increase is destroyed.