Black Lotus + Heavens Crown

Whether thrown or by hand your pact weapon is plunged into the ground and a dark sphere of negative energy blossoms out in a 60-foot-radius sphere from where the weapon embeds in the ground. Each creature in that area must make a Constitution saving throw. A target takes 8d6 necrotic damage on a failed save, or half as much damage on a successful one.

If you choose to do so you can make a Constitution saving throw. and take 8d6 necrotic damage on a failed save, or half as much damage on a successful one. After taking the damage if you were not incapacitated. You can force all creatures minus yourself to make another constitution saving throw. A target takes 8d6 radiant damage on a failed save, or half as much damage on a successful one. As crackling spears of energy materialize in the spells radius and are shortly hurled at everyone in the area.