Wail

Monster Manual, D&D Basic Rules

Wail (1/Day). The banshee releases a mournful wail, provided that she isn’t in sunlight. This wail has no effect on constructs and undead. All other creatures within 30 feet of her that can hear her must make a DC 13 Constitution saving throw. On a failure, a creature drops to 0 hit point. On a success, a creature takes 10 ( 3d6 ) psychic damage.