Ritual of Soot

Golgari Swarm Spell
All creatures within range must succeed on a Constitution Saving Throw or take 6d10 + 10 Necrotic Damage. On a save, they take half as much. Creatures that fail the save and drop to 0 hit points because of this spell are Disintegrated. Until the start of the Caster's next turn, the Area of Effect is a thick cloudy fog of soot and ash that makes the area Heavily Obscured.
A disintegrated creature and everything it is wearing and carrying, except magic items, are reduced to a pile of fine gray dust. The creature can be restored to life only by means of a true resurrection or a wish spell.
For each level above 7 that this spell is cast at, add an extra 2d10 Necrotic Damage

Effect Duration

Instantaneous

Effect Casting Time

Action (Ritual)

Range

80 ft, 30 ft Radius

Level

7