Disrupt Undead

You cause negative energy to spring up in a creature you can see within range, harming a living creature and shaking apart a creature that is powered by the substance of the unseen world. The creature must succeed on a Constitution saving throw or take 1d8 necrotic damage. If the target is an undead creature, this spell instead deals 1d12 thunder damage.

The spell’s damage increases by one die when you reach 5th level (2d8 or 2d12), 11th level (3d8 or 3d12), and 17th level (4d8 or 4d12).