Venomous Rejoinder

When you're hit with an arrow, bolt, sling bullet, or other small ranged weapon, instead of taking damage you can choose to catch the missile and return it to your attacker, transforming it into a venomous snake or spider.

Make a ranged spell attack targeting your attacker and using the range of the original attack as your range for this spell. On a hit, the target takes the damage of the original attack and 2d6 poison damage and must succeed on a Constitution saving throw or become poisoned for 1 minute. The missile then resumes its original form. If you miss, the missile is lost. A creature thus poisoned may repeat the saving throw to end the condition after its next and subsequent turns.