Adder's Strike

You make a melee attack against a creature in range using a weapon of your choice. If the attack hits the target must make a constitution saving throw, on a failure the target takes an additional 2d4 poison damage and the target is inflicted with the poisoned condition for one minute. On a success the target takes half damage and isn't inflicted with the poisoned condition. At the end of each of it's turns the target may repeat the saving throw ending the condition on a successful save.