Blo Staff

Weapon (quarterstaff, blowgun), uncommon
  Enchanted with conjuration magic, this hollow, weighted staff can conjure its own magical ammunition. With a twist of the steel mouthpiece, you can manipulate which poison the blo staff applies; bo tox, a muscular inhibitor, or amani tox, a deadly fungal extract.
  This weapon has 4 charges and regains 1d4 expended charges daily at dawn. This weapon auto-loads itself and so loses the blowgun’s ‘loading’ property.
  Blow Dart. You can expend a charge to use one of the blowgun’s pre-loaded, magical darts. When you do so, choose one of the following poisons to apply to the dart:
  Bo tox. On a hit, a creature must succeed on a DC 13 Constitution saving throw or be poisoned until the end of your next turn. While poisoned in this was, a creature is also paralysed.
  Amani tox. On a hit, a creature must make a DC 13 Constitution saving throw. It takes 4d6 poison damage on a failure, or half as much damage on a success.
  Rare variant: The staff has 6 charges and regains 1d4 + 2 charges daily at dawn. Increase the DCs to 15 and the damage of Amanitatox to 6d6 poison.
  Very rare variant: The staff has 8 charges and regains 1d6 + 2 charges daily at dawn. Increase the DCs to 16 and the damage of Amanitatox to 8d6 poison.