Viper’s Blade

Weapon (Rapier), rare (requires attunement)

When you hit with an attack roll using this rapier, the target takes an extra 1d8 poison damage. Before making an attack roll with it, you can use a bonus action to extend your reach for that attack by 5 feet.

Viper’s Malice. When you hit a creature with an attack using this rapier, you can force that creature to make a DC 15 Constitution saving throw. On a failed save, the target is blinded until the end of your next turn. On a successful save, you are blinded until the end of your next turn.