Arrow of Sharpness

Weapon (ammunition), rare.

When you attack an object with this magic ammunition and hit, maximize your weapon damage dice against the target.

When you attack a creature with this weapon and roll a 20 on the attack roll, that target takes an extra nine piercing damage. Then roll another d20. If you roll a 20, you pierce through one of the target’s limbs, effectively leaving it nonfunctioning. If the creature has no limb to pierce, you cut through a portion of its body instead.

In addition, you can speak a command word to cause the arrow to shed bright light in a 10-foot radius and dim light for an additional 10 feet. The ammunition shines in this manner for 1 minute.