You curse a target to die. The targets current and maximum hit points are reduced by 3d10 + 10. If this causes a creatures to have zero hit points, the creature dies. For the duration of the spell, the target cannot regain hit points unless from a spell cast using a spell slot of higher level than the spell slot this curse was cast with, and any death saving throw they roll is automatically considered a 1. At the start of a creatures turn while they are under the effect of this spell, they make a Charisma saving throw. On failure, their current and maximum hit points is reduced by 1d10+10. On a successful save, the spell ends. A creature's maximum hit points are restored when it takes a long rest.