Bane

Casting Time: 1 action
Range/Area: 30ft.
Components: V, S, M(a drop of blood)
Duration: Concentration, up to 1 minute
Attack/Save: CHA

Up to three creatures that you can see within range must each make a Charisma saving throw. On fail, whenever a target makes an attack roll or a saving throw before the spell ends, subtract 1d4 from the attack roll or save.

Using a Higher-Level Spell Slot. You can target one extra creature for each spell slot level above 1.