Fireball - Poison Transmuted

A sickly green streak flashes from your pointing finger to a point you choose within range and then detonates into a mass of wet sticky droplets. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d6 poison damage on a failed save, or half as much damage on a successful one.

The poison spreads around corners, and remains in place for an additional turn. Creatures who enter the area for the first time on a turn or starts its turn there must make a Constitution check or receive 2d8 poison damage. The poison is not flammable.

Usage of this spell consumes one sorcery point

At Higher Levels. A side-effect of spell transmutation is that spells cannot be cast at higher levels