Venom Blast

You gesture to call forth an ethereal serpent at a point within range and speak, commanding the beast to let loose a deadly venom. Creatures within a 15-foot radius of the serpent must make a Constitution saving throw. If they fail, they are poisoned for one minute and take 6d6 poison damage. If they succeed, they take half as much damage and are not poisoned. A creature that is poisoned by this spell can repeat their saving throw at the end of each of their turns, ending the effect on a success.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the poison damage increases by 1d6 per slot level above 3rd.