Arrows of slaying were magically enchanted arrows designed to kill one particular type of target.
Description
Several different types of arrows of slaying existed, meant for a wide variety of targets, with varying degrees of specificity. For example, while very specific arrows of blue
Dragon slaying existed, it was also common to find more vague arrows of
Dragon slaying.
Other, less common variants of this type of projectile existed, such as bolts of slaying, intended to be used in crossbows.
Powers
When an arrow of slaying hit its intended target, it caused a devastating amount of damage, some of which could be resisted by the target. After one hit, the enchantment ended and the arrow of slaying became an ordinary arrow.