Gusting Blowgun

This magic, twisting blowgun channels the air around it to create powerful blasts of wind. When you hit with a ranged attack using this weapon, the target takes an extra 1d4 bludgeoning damage, and if the target is a Medium or smaller creature, it must succeed on a DC 13 Strength saving throw or be pushed 5 feet away from you. Attacking at long range with this weapon doesn't impose disadvantage on your ranged attack rolls with it. The blowgun has 3 charges and regains all expended charges daily at dawn. As an action, you can expend 1 of its charges to blow through the weapon to create a line of wind 30 feet long and 5 feet wide. Any Medium or smaller creature in the line must succeed on a DC 13 Strength saving throw or be pushed 10 feet away from you.

Ammunition: 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. The ammunition of a firearm is destroyed upon use. 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").

Range: A weapon that can be used to make a ranged attack has a range shown in parentheses after the ammunition or thrown property. The range lists two numbers. The first is the weapon's normal range in feet, and the second indicates the weapon's maximum range. When attacking a target beyond normal range, you have disadvantage on the attack roll. You can't attack a target beyond the weapon's long range.

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.

Proficiency: martial, blowgun Source: The Griffon's Saddlebag: Book Two p. 96 (Third Party)