Bane
Up to three creatures of your choice that you can see within range must each make a Charisma saving throw. Whenever a target that fails this save makes an attack roll or a saving throw before the spell ends, the target must subtract 1d4 from the attack roll or save.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 1.
Bane 5e 2024 vs. 2014 edition differences
The 2024 version adds "up to" to duration, includes warlock as a class, specifies "each make a Charisma saving throw," and states "subtract 1d4" instead of "roll a d4 and subtract." The higher-level slot effect wording is simplified but functionally similar.