Cobra Fangs
If the target doesn’t have a bite attack, it gains one. The target is proficient with the bite, and it adds its Strength modifier to the attack and damage rolls. The damage is piercing and the damage die is a d4.
When the target hits a creature with its bite attack, the creature must make a Constitution saving throw, taking 3d6 poison damage on a failed save, or half as much damage on a successful one.