Stinger 2014
Weapon, rare
You gain a +1 bonus to attack and damage rolls made with this magic weapon. When you hit a creature with an attack using this weapon, you can use a bonus action to inject paralyzing venom in the target. The target must succeed on a DC 15 Constitution saving throw or become paralyzed for 1 minute. It can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Creatures immune to poison are also immune to this dagger's paralyzing venom. The dagger can't be used this way again until the next dawn.
Properties
Finesse
When making an attack with a finesse weapon, you use your choice of your Strength or Dexterity modifier for the attack and damage rolls. You must use the same modifier for both rolls.
Light
A light weapon is small and easy to handle, making it ideal for use when fighting with two weapons.
Thrown (range 20/60)
If a weapon has the thrown property, you can throw the weapon to make a ranged attack. If the weapon is a melee weapon, you use the same ability modifier for that attack roll and damage roll that you would use for a melee attack with the weapon. For example, if you throw a handaxe, you use your Strength, but if you throw a dagger, you can use either your Strength or your Dexterity, since the dagger has the finesse property.
Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details