Snowball (Patreon)

Wondrous item, rare

The exterior of this frost-covered quiver is cool to the touch, and the interior is always below freezing. A nonmagical piece of ammunition that has been left inside this quiver for 24 hours becomes icebound. Oh a hit, a piece of icebound ammunition deals an additional 1d6 cold damage (2d6 cold damage instead if the target is in extreme cold). Once it hits a target, the ammunition is no longer icebound as the ice surrounding it shatters to pieces. 

Hailstorm. As an action you can fire 3 or more icebound pieces of ammunition at once with a bow or crossbow (up to a maximum number equal to your proficiency bonus) to produce a 20-foot-radius, 40-foot-high cylinder of crashing hail centered on a point you can see within 60 feet of you. Each creature in the area must make a DC 14 Dexterity saving throw. A creature takes 1d6 cold damage and 1d6 bludgeoning damage per piece of ammunition spent on a failed save, or half as much damage on a successful one. 

All pieces of ammunition used for this property are destroyed. 

Many prepare themselves for combat; shields, heavy armor, guards and wards to stave off assault. Few are as ready to weather the awesome power of the natural world itself, only recognizing their mistakes in their final moments buried beneath sleet and hail.