bloom of poison

You point your finger to a point you can see within range, a little bloom bud appears and then blossoms with a low roar into an explosion of acid. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d6 acid damage on a failed save, or half as much damage on a successful one.

After the initial explosion, a gas will form within that radius Dealing 2d4 poison Damage to Creature that starts there turn in the zone. The gas will dissipate after 1 min or can be dispelled by a gust spell or a strong breeze.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 and 1d4 for each slot level above 3rd.