Defiling Crystals

You target the corpse of a dead creature that you can see within range, causing clusters of crystal gemstones of your choice to form out of their body before exploding outward. The corpse must be from a creature that is Large or smaller. Creatures within a 10 ft. sphere of a point you choose on the corpse must make a Dexterity saving throw, taking 3d6 Piercing damage and an additional 2d4 damage depending on the gemstone chosen on a failed save, and half as much on a successful one.

A corpse targeted by this spell has the base of the crystals remain in the body, preventing the corpse from being revived and gaining Hit Points for 1 minute. Afterward, the crystals dissipate from the corpse. A corpse targeted by this spell cannot be targeted again.

List of gemstones

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, increase the Piercing damage by 1d6 and the gemstone damage by 1d4 for each slot level above 1st.