Longbow of the Sky Sentinel

The  is a magical bow that was used by Vex'ahlia before she acquired Fenthras.

Appearance
The Longbow of the Sky Sentinel is very well-crafted, with elven designs. There are bits of mithral scrolling throughout the bow itself and platinum caps on the ends.

Properties
The longbow has a general range of 120 feet and a +2 bonus to all attacks. Once per long rest, the wielder can make the next arrow they fire to be a Storm Arrow, which splits into three separate arrows. Each arrow that hits deals an extra 1d6 lightning damage.

If a magical arrow is shot from the Longbow, the two additional arrows would not copy its effects, however, each arrow can trigger Hunter's Mark damage independently. The Blazing Bowstring can be used to add 1d10 Fire damage to the initial arrow, but it does not affect the two additional arrows.

History
The Longbow was discovered by Vox Machina in an abandoned stone giant fortress in the Alabaster Sierras and was used for the last time against wisher pixies in the Feywild.