Alpha's Heated Lightning

You create a sphere of flaming rock with a tail of noxious, superheated gasses. Make a ranged spell attack to hit. On a success, it inflicts 3d8 bludgeoning damage and 3d8 fire damage. In addition, all creatures within 10 feet of the target must make a Dexterity saving throw, taking 3d8 fire damage on a failed roll or half as much on a successful one.

Finally, all creatures within 20 feet of the target, including the target, must make a Constitution saving throw against poison. On a failed save, the creature must spends their action that turn retching and reeling, takes 2d8 poison damage, and is poisoned for 1 minute. Creatures that don't need to breathe or are immune to poison automatically succeed on this saving throw. The gasses disperse after 1 round

At Higher Levels. If you cast this spell with a 8th-level or higher spell slot. you inflict an additional dd8 bludgeoning, fire, and poison damage for each spell slot above 7th.