Bloodfuel Crossbow Light 2014
Weapon, rare, (requires attunement)
You gain a +1 bonus to attack and damage rolls made with this magic weapon. The first time you attack with the weapon on each of your turns, you can spend one or more Hit Dice, up to your maximum Hit Dice. For each Hit Die spent in this way, you roll the die and add your Constitution modifier to it. You lose hit points equal to the total, and the target takes extra necrotic damage equal to the total. You can't use this feature of the weapon if you don't have blood. Hit Dice spent using this weapon's feature can't be used to regain hit points during a short rest. You regain spent Hit Dice as normal.
Properties
Ammunition (range 80/320)
You can use a weapon that has the ammunition property to make a ranged attack only if you have ammunition to fire from the weapon. Each time you attack with the weapon, you expend one piece of ammunition. Drawing the ammunition from a quiver, case, or other container is part of the attack (you need a free hand to load a one-‐‑handed weapon). At the end of the battle, you can recover half your expended ammunition by taking a minute to search the battlefield.
If you use a weapon that has the ammunition property to make a melee attack, you treat the weapon as an improvised weapon (see “Improvised Weapons” later in the section). A sling must be loaded to deal any damage when used in this way.
Loading
Because of the time required to load this weapon, you can fire only one piece of ammunition from it when you use an action, bonus action, or reaction to fire it, regardless of the number of attacks you can normally make.
Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details