Banshee

4th-Level Necromancy (Dark Magic)
Casting Time: 1 action
Range: 90ft
Components: V,S,M (A piece of glass from an abandoned building)
Duration: Concentration, Up to 1 minute.
Available to: Clerics, Warlocks.

You summon three Wisps of dark energy within range, each one of them immediately attacks one creature within 5ft. of them. Make a spell attack roll for each one. The wisps deal 1d8 + your spellcasting modifier necrotic damage, and any creature hit by them has its armor class reduced by 2 until the start of your next turn.

As a bonus action on each of your turns until the spell ends, you can move each wisp up to 15ft in any direction and attack with them. They must remain within the spell's range At Higher Levels: when you cast this spell with a spell slot of 6th level or higher you may summon 1 extra wisp for every 2 levels after the 4th.