Psychic Scream

9th-level Enchantment
Casting Time: 1 action
Range: 90 feet
Components: S
Duration: Instantaneous

As in Xanathar's Guide to Everything with the following note and an upcasting option added:
Instead of causing heads to explode, the spell now reads: If a target is killed by this damage, the resonance of the spell remains, causing any resurrection spell beneath resurrection to fail.
At Higher Levels. When you cast this spell using a spell slot of 10th level or higher, you can target one additional creature for each slot level above 9th.

Source: XGE 163

Changelog