A globule of dark fluid appears above your hand, hurling itself towards a target location combusting on contact. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d4 fire damage & 6d4 necrotic damage on a failed save, or half as much damage on a successful one. The fire spreads around corners as it erupts, igniting flammable objects in the area.   After the initial eruption, a black flame continues to burn where the fluid landed. Creatures that come into contact with this flame take 1d6 fire damage and suffer a level of exhaustion as the ebony flames burn the vitality from its victims. The flame burns indefinitely even if smothered or drowned. To extinguish the flame, only a gallon of Holy Water or Dispel Magic will suffice.   Rubble or cobblestones with the burning liquid on them may be relocated so long as the creature is careful not to touch the flames.