Cry of the Banshee

When you become the target of a melee attack, you can use your reaction to step away by 5 ft without causing Attack of Opportunity and cast this spell. The target of this spell is all creatures (ally or not) within range. All targets must make a CON Saving throw against your spell save DC. If a target is unsuccessful they instantly fall to the ground and are brought down to -5 HP. They must roll for death save on their next turn. For any target that succeeds the save, they are dealt 8d8 necrotic damage. If a creature were to die this way, they are instead dropped to -5 HP and must roll a death save on their next turn.