Blood Star

Choose a living creature you can see within range (this spell has no effect on undead or constructs). Petrified blood suddenly spikes out from its chest and into anything nearby, violently emerging as hundreds of jagged razor-sharp spears. The target must make a Constitution saving throw, taking 8d12 necrotic damage and 2 levels of exhaustion on a failed save, or half as much damage and exhaustion on a successful one. The target and each creature within 5 feet of it must then succeed on a Dexterity saving throw, taking 4d6 piercing damage on a failed save or half as much on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the necrotic damage increases by 2d12 and piercing damage by 1d6 for each slot level above 7th.