Combustion

In a burst of flame, the user of this spell creates an explosion around themself, scorching the very earth.

In a 60 foot radius around the user, fire blasts out, dealing 20d20 damage to all caught in the radius. If a target is in the radius, they can make a Dexterity saving throw against your spell save DC. The casting of this spell instantaneously knocks the user down to 0 hit points, and they must start rolling death saves.