You conjure a shadowy bell in front of you that rings with an ominous, ethereal tone for the duration. When you cast this spell, each creature within 30 feet of you that isn’t an Undead or Construct must succeed on a Wisdom saving throw or become frightened for the duration.    While frightened by this spell, a creature views you as a specter of death and impending pestilence, and it must take the Dash action and move away from you by the safest available route on each of its turns, unless there is nowhere to move. If the creature ends its turn in a location where it doesn’t have line of sight to you, it can make a Wisdom saving throw, ending the frightened condition on itself on a success.    Until this spell ends, each creature that starts its turn within 30 feet of you has disadvantage on death saving throws and on Constitution saving throws against disease and necrotic damage.