Black Flame of Minas Morgul

You call forth a burning wave of green-black flame from the depths of Minas Morgul. Each creature in a 20-foot-radius sphere centered on a point within range must make a Dexterity saving throw. On a failed save, they take 6d10 necrotic damage and are Blinded until the end of their next turn. On a success, they take half damage and aren’t blinded.

Creatures reduced to 0 HP by this spell erupt into green flame and become ash, leaving no remains.