Tongueworm

This coil of muscle terminates in a sharp barb. When you attune to it, this daelkyr-bred worm attaches to your throat and nestles under your tongue. You can take a Bonus Action to make an Unarmed Strike with the worm, using your choice of Strength or Dexterity for the attack. On a hit, you deal Piercing damage equal to 1d4 + your Strength or Dexterity modifier (your choice), instead of the normal damage of an Unarmed Strike. In addition, the target must succeed on a DC 13 Constitution saving throw or have the Poisoned condition until the start of your next turn.