Banshee's Wail

All creatures within a 15 ft cone in front of you that can hear you must make a constitution saving throw. On a failure, a creature drops to 0 hit points. On a success, a creature takes 3d6 psychic damage.  The spell has no effect on constructs and undead and a target automatically succeeds on this saving throw if it has a constitution score of 16 or higher.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 2d6 for each slot level above 4th.