Exsanguinate

5th-level necromancy   Casting time: 1 action   Range: 30 feet   Target: One creature within range that you can see   Components: V, S, M (a desiccated horse heart)   Duration: Concentration, up to 1 minute   Classes: Cleric, Warlock, Wizard   Subclasses:  
You cause a creature's body to become engorged with blood or ichor. You target one creature that you can see within range. the target must make a Constitution saving throw. If it succeeds, it suffers 2d6 bludgeoning damage. If it fails, each round until the spell ends, the creature takes 4d6 bludgeoning damage, its hit point maximum is reduced by an amount equal to the damage taken, and it is incapacitated, cannot speak, and cannot breathe, as it vomits up torrents of blood or ichor. At the end of each of its turns, an affected creature can make a Constitution saving throw. If it succeeds, the effect ends for that creature.   The reduction of its hit point maximum lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.   At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, target one additional creature ofr each spell slot level above 5th.