Orner's Venomous Crossbow

Damage: 1d6 Piercing + 1d6 Poison
Range: 30/120 ft.
Modifier: Ranged Attacks +1, Ranged Damage +1
Once per day when you hit with this magical
weapon, you may use your bonus action to expel
all of the remaining toxin in the reservoir and the
creature must succeed on a DC 15 Constitution
saving throw or take 10d6 poison damage (1/2
on a save). Afterward, and until the next day,
attacks with this weapon no longer add 1d6
poison damage. Requires Attunement.