Wail of the banshee

Wail of the banshee is a necromancy spell that kills several creatures.

Effects
You emit a terrible scream that kills creatures who hear it, except for yourself. The more powerful the caster, the more creatures that can be effected by the wail.

History
This spell is not Netherese in origin or was it created by Sammaster as many necromancy spells were during his dark days. It's history is otherwise unknown.

Realmslore
Wail of the Banshee is a very rare spell in the Realms. Szass Tam likely knows this spell.