Wail of the Banshee

This terrifying spell emits a dreadful, soul-chilling scream. Each creature within range, excluding you, takes 1d4 x 10 hit points of necrotic damage and must make a Constitution saving throw. On success, the creature suffers no further effect.

On a fail, if the creature has 50 hit points or fewer remaining, the creature dies. If the creature has 51 or more hit points remaining, it takes 8d6 necrotic damage and its hit point maximum also reduces by this amount.

This maximum hit point reduction lasts until the end of a long rest. Creatures that can’t hear are unaffected, as are constructs and undead.