Wail of the Banshee

  You release a soul-piercing scream that echoes the final moments of the damned. Each creature of your choice within range that can hear you must make a Constitution saving throw.

• On a Failed Save: A creature takes 12d10 Necrotic damage. If this damage leaves the creature with 100 hit points or fewer, it is immediately reduced to 0 hit points and dies. A surviving creature is Frightened of you until the end of its next turn.
• On a Successful Save: A creature takes half as much damage and isn't Frightened.

  If this spell kills one or more creatures, you gain 40 Temporary Hit Points as you siphon the escaping life force. This spell does not affect Undead or Constructs.