Banshee Grenade

This small metal sphere is about three inches in diameter, with four glowing gems in a line along the surface. Contained inside is the spirit of a dying banshee.

You can use an action to throw the banshee grenade up to 60 feet. Upon impact, the banshee contained inside is released, lets out a wail provided that she isn't in sunlight, and then immediately dies. The 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 points. On a success, a creature takes 10 (3d6) psychic damage.

Notes: Damage, Combat